1

Cow Milked While Flying in an Airplane Day

Image: Adam Sherez

Let’s kick off this list with a day that nobody ever imagined would be a thing, but here we are nonetheless! Have you ever heard of cows taking to the skies? Well, in 1930, that became true. A cow named Elm Farm Ollie became the first to fly in an airplane and be milked while airborne! This curious day, observed on February 18th, honors Ollie’s mile-high milking session.

You might be wondering why they did this in the first place. It was actually a scientific experiment to test the cow’s ability to produce milk during flight. And it was great publicity for the aircraft they used to do it. A classic win-win, and a quirky holiday on the side!

2

Namesake Day

Image: Jamie Street

Do you know that feeling when you walk up to a certain group for the first time and, among the introductions, you discover someone shares your name? You may not have anything else in common with that person, but the invisible string is there and that’s thanks to having the same name.

In our country, there’s even a day dedicated to celebrating our namesakes . That is every first Saturday in March, though the reason or origin behind this day remains unclear. However, it is a perfect opportunity to celebrate our shared identities.

3

Sock Monkey Day

Image: Denisse Leon

This list is getting crazier and crazier and don’t say you weren’t warned! But isn’t it fun to learn that there is a National Sock Monkey Day in our country? This holiday celebrates one of America’s quirkiest homemade toys: the sock monkey!

Traditionally made from Rockford Red Heel socks, these little guys have been around since the 1890s, although some also say that they were the result of the Great Depression.

Regardless, when can you celebrate this charming tradition? March 7th is the official day to honor this cheerful craft. It’s a day for making, gifting, or simply hugging a sock monkey in appreciation. With a little patience and a pair of old socks, you might even make one yourself! Embrace your inner child and get crafty on Sock Monkey Day!

4

National Senior Citizens Day

Image: Clay Banks

This one is not crazy at all! If anything, this one should be a must-celebrate for everyone! August 21st is all about recognizing the wisdom and experience that come with age. Established by President Reagan in 1988, National Senior Citizens Day encourages respect and appreciation for older generations.

Now, what motivated this holiday? As medical technology improved over time, life expectancy increased dramatically. While it was common to live for 30 years in the Late Middle Ages, by the 20th century, people were reaching 50 or even 60 years. That progress alone was reason enough to celebrate—and thus, this special day was born!

5

National Fried Chicken Day

Image: Tyson

If we gave you thirty seconds to name the most American things you can think of, how long would it take for fried chicken to make your list? It would probably be the second or third item on your list, right? Well, now you can see why fried chicken has a national day too!

July 6th is National Fried Chicken Day, a day to revel in one of America’s tastiest comfort foods! From crispy Southern-style to spicy Nashville hot, fried chicken has a place in the hearts (and stomachs) of many. The origins of fried chicken are a blend of Scottish and West African cooking traditions, but today it’s an American staple.

Not that we need much of a reason to have a nice bucket of fried chicken, but isn’t it extra special to indulge on its very own day?

6

Put on Your Own Shoes Day

Image: Nathan Dumlao

Don’t we all do that every single day of our lives? So, what makes this a special holiday? Put on Your Own Shoes Day on December 6th may seem simple, but when you read into it, you’ll find it’s a subtle nod to independence.

The truth is information regarding the origins of this day is not abundant, but we can confidently say that it’s more of a symbolic celebration. It’s a day to help our little ones learn how to tie their shoes, or maybe take their first steps. It’s also a metaphor that, adults as we are, we have made it this far, after all, independence comes in many forms, even lacing up your shoes! So, walk proudly on this quirky holiday and celebrate your strides toward independence!

7

National Ghost Hunting Day

Image: Erik Müller

No, this is not the same as Halloween, of course. But, if you may, it’s kind of a warm-up for the spooky season, since this one takes place on the last Saturday in September, exactly a month before Halloween, making it the perfect prelude to all things eerie.

For those who enjoy a good scare , National Ghost Hunting Day was created in 2016 and is perfect for thrill-seekers and fans of the paranormal. Groups often venture to "haunted" spots armed with flashlights, cameras, and a lot of curiosity. It’s also a chance to explore local legends and folklore about ghosts and spirits. Even if you stay home, you can participate by watching a ghost-hunting show. Get your flashlight ready and have a ghoulishly good time!

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National Nothing Day

Image: Edwin Splisser

What? That’s right, this one is indeed a National Day and it has been ever since 1973 when Harold Coffin, an American newspaper columnist suggested that there were too many useless commemorative days . This is getting meta, don’t you think?

Anyway, National Nothing Day is celebrated every January 16th, and it is, quite literally, a day to do absolutely nothing! It was originally conceived as a way to avoid celebrations, this day offers a "holiday from holidays." There are no obligations, no parades, and no need to mark the occasion in any way. In short, this day is a license to relax. You may be wondering what should you do to celebrate and the answer is right there: Nothing!

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National Spaghetti Day

Image: Jeswin Thomas

Spaghetti is not exclusive to America, it’s a dish gifted to the world by the Italians. But America, with its classic intense feelings about the things that make it great, felt the need to create a day specifically designed to have a delicious bowl of Spaghetti . And honestly? We love it!

January 4th is National Spaghetti Day, a pasta dream come true! The best part is that there are as many variations and toppings as there are people who enjoy it. Whether you love it with marinara, meatballs, or pesto, there’s a recipe for everyone.

Many celebrate by whipping up a pasta dish or visiting their favorite Italian restaurant. Whatever you choose, twirl some spaghetti and toast to this delicious day!

10

National If Pets Had Thumbs Day

Image: Jamie Street

Imagine if your cat could open the fridge or your dog could hitchhike! If only, right?

March 3rd is National If Pets Had Thumbs Day in our country, a humorous look at what life would be like if pets had opposable thumbs.

The day makes us all wonder about the possibilities, and maybe even the mischief if we know our furry friends, of a more skillful pet . What would be the first thing you’d do? Some pet owners share funny stories or create scenarios imagining what their pets might do with that extra dexterity.

This holiday is all about celebrating the quirks and charm of our pets. Get ready to laugh, because a thumbs-up from your pet might be closer than ever!

1

Raven Rock Mountain Complex

Image: Ilagam

Did you know that in the 1950s, the US government carved out a secret underground city that could survive a nuclear attack? It’s called an "underground Pentagon", and very much like Area 51, it is one of the government's most classified projects.

This military complex and nuclear bunker is located near Blue Ridge Summit, Pennsylvania, 768 feet below the ground. It’s protected by 23.5 ft thick 30-ton doors built on top of springs to survive the shock from a blast. Raven Rock has five buildings with 15 floors big enough to live and work. The base has everything it needs to keep running, like a cafeteria, a barbershop, water generators, and even a medical center.

2

SubTropolis

Image: mwewering

Below Kansas City, Missouri, lies the world's largest underground business complex. SubTropolis is a structure located inside a mine north of the Missouri River. It was carved out of limestone some 135 to 185 feet underground and covers a total of 55 million square feet.

Kansas City Chiefs founder Lamar Hunt built this subterranean city in the 1960s. It has offices, storage space, and even factories. Over 1,600 people work here every day, largely because SubTropolis remains cool all year, making it an ideal location for businesses. Fun fact: some of Hollywood’s most beloved masterpieces are kept here, including the original film reels of Gone with the Wind and The Wizard of Oz.

3

Underground Atlanta

Image: Ronny Sison

Underground Atlanta is a historic spot in downtown Atlanta, Georgia. It was built in the late 1800s, right after the Civil War, as a commercial district centered around the railroad. In the 1920s, viaducts were built and the streets were raised, creating a second level of streets, buildings, and shops.

During Prohibition, the abandoned underground space served as the best spot for speakeasies and juke joints. For decades, people forgot about the hidden city, but in the 1960s, it was brought back to life as a fun place for music bars and nightlife.

4

New York City Subterranean World

Image: Photographer: unknown, Public domain, via Wikimedia Commons

Under America’s most populous city, there's a whole hidden world. For example, beneath Little Italy and the Public Library, there are secret vaults. Beyond the subway millions of people use daily, there is City Hall station, opened in 1904 and closed in 1945. It's a hidden gem with stained glass and mosaics that you can still visit by staying on the 6 train past the last stop.

But that’s not all! There are trading tunnels in SoHo and old cattle tunnels in the Meatpacking District. Also, in 1897, there were mail tubes built around the city to send letters between post offices that operated until the 1950s. Some of these underground spaces go as deep as 800 feet!

5

Permafrost Tunnel Research Facility

Image: Paxson Woelber

A large part of the land in the northern hemisphere is Permafrost, so it makes sense that there is a research facility specially built to study it. The Permafrost Tunnel in Alaska is the best place to learn about frozen soil that's over 40,000 years old.

The long tunnel was dug from 1963 to 1969 to study how to build and mine in frozen environments. Inside the facility, scientists study ice, ancient plants, and even bones from animals like mammoths. The tunnel shows different layers of earth, uncovering frozen ground from different time periods that help scientists anticipate what might happen as the world gets warmer.

6

The Greenbrier Bunker

Image: Alex Holzreiter

The Greenbrier Bunker in White Sulphur Springs, West Virginia, is a secret underground facility beneath a luxury hotel that has hosted numerous US presidents and famous guests. It was built during the Cold War to protect the US Congress in the event of a nuclear attack. The bunker was designed to house all 535 members of Congress and their staff for a long time.

This classified underground facility remained a secret until 1992, when a Washington Post article exposed it. Today, visitors can take tours to see special rooms, blast doors, and decontamination areas.

7

The Caverns

Image: jymy duhomme

Would you attend a concert underground? If you travel to Tennessee is totally possible! The Caverns, formerly known as Bluegrass Underground, is a very cool spot in Grundy County, Tennessee. Lying deep in a cave 333 feet underground, this concert venue with natural acoustics is the perfect place for live music.

People come from all over to hear a variety of performances, especially Bluegrass music. The Caverns can accommodate up to 1,200 people standing up and are equipped with state-of-the-art sound and lights. The cave's cool and quiet atmosphere makes the experience extra special!

8

Crystal City Underground

Image: Gustavo Alejandro Espinosa Reyes

Beneath the neighborhood of Crystal City, near Washington, DC, lies a network of shops, restaurants, and offices. It opened in 1976 and was designed to feel like an old shopping village with cobblestone streets and antique glass windows.

The underground space covers 150,000 square feet and connects several buildings. It's a popular spot for office workers and visitors, especially when the weather is bad. Unfortunately, in 2024, the shops closed, ending their retail era. Yet, the underground walkways and connections to the Metro remain open for pedestrians.

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Los Angeles Prohibition Tunnels

Image: Alpha Perspective

In the 1920s, during Prohibition, people had to find ingenious ways around the restrictions on selling and consuming alcohol. That's why they built about 11 miles of underground tunnels right under Los Angeles.

Many of these subterranean sites are now closed, but you can still find a few hidden entrances around the city. You can even go on a tour to explore the tunnels and learn about their secret history.

10

Havre Beneath the Streets

Image: Đào Việt Hoàng

After a big fire in 1904 destroyed Havre’s business district in Montana, many shops moved underground. They used the old steam tunnels to stay safe from fires and bad weather. For years, the tunnels were busy with people and stores, such as saloons, drugstores, laundromats, and even a brothel. But today it is completely silent.

Fortunately, you can still visit what is left of this hidden city to see old shops and learn how people stayed safe and worked over 100 years ago. It's like going back in time!

11

Cheyenne Mountain Complex

Image: See page for author, Public domain, via Wikimedia Commons

One of the safest places in the world is right here in America, more specifically in El Paso County, Colorado. Hidden inside a mountain, Cheyenne Mountain Complex was built in the 1960s to protect the US military from nuclear attacks.

The bunker stands under 2,000 feet of solid Granite, making it super strong and safe. It was once the command center for NORAD (North American Aerospace Defense Command). The complex has blast doors that weigh 25 tons each and can withstand a nuclear blast. It also has its own power, water, and food supply. People could survive there for months!

12

Forestiere Underground Gardens

Image: Levi Clancy, CC0, via Wikimedia Commons

A Sicilian immigrant called Baldassare Forestiere spent 40 years digging and building a series of subterranean structures by hand in Fresno, California. Inspired by Roman catacombs and old wine cellars, he created around 65 rooms, tunnels, and courtyards to escape the hot summer sun.

The Gardens have fruit trees, grapevines, fishponds, and even a chapel. Some of the trees are more than 90 years old! Today, Forestiere Underground Gardens is a Historical Landmark you can visit if you want to discover a true underground paradise.

1

The original plan included full-body figures

Image: Thomas Shockey

Mount Rushmore was supposed to be even more colossal than it already is. Sculptor Gutzon Borglum envisioned the four presidents carved from the waist up .

He even made plaster models showing Abraham Lincoln's coat folds and Teddy Roosevelt’s hand clutching his lapel. But as costs went up, Congress said: "heads only, please."

2

Charles Rushmore was just a curious New Yorker

Image: Maarten van den Heuvel

Back in 1925, when the mount was about to be carved into a monument, Charles Rushmore wrote a letter explaining why the peak bore his name. He recalled that in the 1880s he was a young New Yorker working in the area, and fell fond of that particular granite peak .

When he asked the locals about it, they informed him that it had no name, but that if he wished so, they would just start calling it Rushmore Peak, or Mount Rushmore, or the likes. Years later, that very name had been inscribed in the public domain to designate the peak.

3

Yes, there’s a hidden room behind Lincoln’s head

Image: Laura Nyhuis

Behind Abraham Lincoln’s hairline lies a hidden chamber, part of Borglum’s lofty idea for a "Hall of Records." This room was meant to house foundational American documents like the Constitution or the Declaration of Independence.

Instead of that, in 1998, a titanium box was placed inside, filled with copies of important documents and biographies, as a time capsule to preserve the treasure of knowledge for future generations.

4

Thomas Jefferson was moved

Image: Dave Baraloto

Jefferson was originally supposed to go to Washington’s right, but after 18 months of chiseling , the granite betrayed them. Cracks and flaws made the site unworkable.

Borglum made the painful decision to blast Jefferson’s half-formed face clean off and start anew on Washington’s left.

5

The mountain was almost a monument to western heroes

Image: Timberly Hawkins

Before presidents took over, the mountain was pitched as a giant tribute to the Wild West . South Dakota historian Doane Robinson wanted to see frontier legends like Lewis & Clark carved into the Black Hills.

But when Borglum came aboard, he had a grander (and more politically bankable) idea: four presidents to symbolize national unity and expansion.

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A woman’s face was almost added

Image: Tom Fournier

In the 1930s, there was serious talk of honoring Susan B. Anthony alongside the Founding Fathers, as a nod to the women’s suffrage movement.

Borglum wasn’t opposed to the idea, but Congress quickly nixed it, stating that only U.S. presidents could be included.

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The workers were mostly local miners and loggers

Image: Pixabay

They were neither sculptors nor artists. Most of the workforce came from nearby Keystone, South Dakota: miners, loggers, and hard-up laborers looking for work during the Great Depression.

Borglum trained them himself. There were no safety harnesses, and yet, remarkably, no one died on the job.

8

Dynamite did 90% of the work

Image: Alexander Paramonov

To carve the faces of Washington, Jefferson, Roosevelt, and Lincoln, workers used carefully timed dynamite blasts to remove over 450,000 tons of rock. They got so precise, they could blast within inches of where the final surface would be.

The last details, like wrinkles, pupils, or Roosevelt’s glasses, were done with jackhammers and chisels.

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The noses are disproportionate

Image: Dudubangbang Travel

Standing in front of the mountain, the faces seem alright. But that’s a trick of perspective. Each presidential nose is a whopping 20 feet long .

If the sculptures had included full bodies as planned, each figure would have stood 465 feet tall. That’s taller than the Statue of Liberty and most downtown skyscrapers.

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Teddy Roosevelt was the most controversial pick

Image: Dudubangbang Travel

Washington, of course. Jefferson, made sense. Lincoln, sure. And Teddy? Some critics raised their eyebrows at Borglum’s fourth choice. Roosevelt had only recently passed away in 1919, and many questioned whether he'd stood the test of time.

But Borglum defended the decision Roosevelt’s role in breaking up monopolies, conserving national parks, and engineering the Panama Canal. Plus, Borglum had met him personally and was a fan.

11

It was supposed to have inscriptions

Image: Dan Pick

Borglum had grander plans than just four giant heads. He wanted to carve a massive inscription next to them, a timeline of America’s most important milestones , chiseled straight into the mountain. In time, the idea was scrapped for practical and aesthetic reasons.

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The visionary died before completion

Image: Lisa Reichenstein

Gutzon Borglum, the visionary behind it all, didn’t live to see his masterpiece finished. He died in March 1941, just as the construction was reaching its end. His son, Lincoln Borglum (yes, named after that Lincoln), took over the project.

Still, with WWII drawing resources elsewhere, funding was slashed, and Lincoln had to wrap things up quickly . Some features, like Lincoln’s ear, were never fully detailed.