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.

9

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

Meghan Markle

Prince Harry’s famous wife wasn’t born with the name Meghan—that’s actually her middle name. Her given name is Rachel , which interestingly enough, matches her character’s name on Suits .

So while the world does indeed know her as Meghan Markle, her full birth name is Rachel Meghan Markle—a fun insider joke for fans of the hit television show.

2

Louis C.K.

The comedian’s real name is Louis Székely . He started using the initials "C.K." as a professional alias, simplifying the pronunciation for audiences.

3

Ralph Lauren

Ralph Lauren – Having a first name as a last name might sound effortless, but it wasn’t always that simple. He was actually born Ralph Lifshitz , a name he later changed to achieve a smoother, more marketable sound.

4

Michael Kors

Meet the second designer on our list. The man we know today as Michael Kors wasn’t always called that—he was born Karl Anderson Jr. before changing his name later in life.

5

Muhammad Ali

Born Cassius Marcellus Clay on January 17, 1942, in Kentucky, Muhammad Ali went on to become a boxing legend, winning the World Heavyweight Championship three times.

The Greatest, as he was known in the boxing ring, decided to change his name in 1964 after converting to Islam and joining the Nation of Islam (NOI).

6

Bill Clinton

Born William Jefferson Blythe III on August 19, 1946, he later took the surname Clinton after being adopted by his stepfather. He went on to become the 42nd U.S. president, serving from 1993 to 2001.

7

Malcolm X

Born Malcolm Little on May 19, 1925, he rose to prominence as an African-American Muslim minister, speaker, and civil rights leader before he died in 1965.

He adopted the name Malcolm X to symbolize the rejection of his family's "slave name" and the lost ancestral African name stolen during slavery.

8

Tiger Woods

The world-famous golfer was born Eldrick Tont Woods but is better known by his nickname, Tiger. The name was given in honor of a close friend of his father’s.

9

Larry King

Larry King was born Lawrence Harvey Zeiger in Brooklyn, New York. Just minutes before his first live broadcast, a manager said his name was "too ethnic." Spotting an ad for King’s Wholesale, they chose "King" on the spot.

10

Sasha Obama

The Obamas' youngest daughter isn’t actually named Sasha. Her full name is Natasha —a fact that went viral after users spotted it on Barack Obama’s Wikipedia page.

11

Joan Rivers

It might be hard to picture this TV star as anyone but Joan Rivers. Born Joan Molinsky , she changed her name on her agent’s advice when starting out. That’s how Joan Rivers came to be.

12

Oprah Winfrey

Talk show host and author Oprah Winfrey was originally named Orpah , after a biblical figure. Since people often struggled to pronounce and spell it, her name gradually changed to Oprah—a name now so iconic that it’s recognized worldwide on its own.

1

The White House

Though America’s most famous house, located at 1600 Pennsylvania Avenue, is not technically on the National Mall, it has been historically considered part of it due to its proximity and importance. It is separated from the National Mall by the Ellipse public park, and has a direct view of one of the most important Mall landmarks, the Washington Monument.

2

How America’s front yard came to be

When Pierre Charles L'Enfant designed Washington, D.C., in 1791, he envisioned a majestic avenue going from the Capitol to an equestrian statue of George Washington (now the site of the Washington Monument). The chosen name referenced the Mall in London, a fashionable avenue near Buckingham Palace. During the following century, L’Enfants’ plans for the Mall were ignored, and the space was used for canals, railways, and gardens. In 1901, the U.S. Senate decided to expand the number of monuments in Washington, D.C., which led to the renewal of the National Mall and to the addition of most of its iconic landmarks.

3

American history in action

As a space open to all Americans and one that is close to the Capitol and the White House, the National Mall has been the scene of many historical moments, from presidential inaugurations to festivals and protests. Among the most important events to take place in the National Mall, we can remember the 1963 March on Washington, the late 1960s Vietnam War protests, the 1987 AIDS Memorial Quilt, and the 1939 Marian Anderson concert.

4

Washington Monument

Located where L’Enfant initially envisioned an equestrian statue of George Washington, this 555-foot marble and granite obelisk was designed in the 1830s , but was not completed until 1884 due to fund shortages and political disputes. In 2011, damages caused by a 5.8 magnitude earthquake forced the closing of the monument, which reopened in 2014.

5

Lincoln Memorial

Conceived shortly after Lincoln’s assassination in 1865, construction began only in 1914, and the memorial was dedicated in 1922. The Neoclassic structure is surrounded by 36 columns, representing the 36 states that formed the Union at the time of Lincoln’s death . The famous statue of Lincoln in the interior is 19 feet tall, and both the Gettysburg Address and Lincoln’s Second Inaugural Address are inscribed on the north and south interior walls.

6

Jefferson Memorial

Authorized by Congress in 1934 and dedicated on April 13, 1943, the construction of this monument sparked outrage, as i t required clearing parts of the Tidal Basin and cutting down some of its cherry trees to make space for the memorial. In what is known as the 1938 Cherry Tree Rebellion, protestors chained themselves to the trees. In the end, a compromise was reached, and most of the trees were transplanted. The monument, an homage to Jefferson’s estate of Monticello and the rotunda of the University of Virginia, features excerpts of his most notable writings.

7

The Capitol

The first building to be constructed in the National Mall, the House of Congress is located in what was then known as Jenkins' Hill (now Capitol Hill) . George Washington laid the foundational stone in 1793, and the initial building was completed in 1800, but it was set on fire by the British during the War of 1812. It was reconstructed in 1826 and expanded during the 19th and 20th centuries.

8

War memorials

Several memorials across the National Mall honor the thousands of Americans who gave their lives while serving the country . The first war memorial was the District of Columbia War Memorial of 1931, dedicated to honor residents of Washington, D.C. killed in WWI. Among the most significant memorials, we can find the National World War II Memorial of 2004, the Korean War Veterans Memorial of 1995, the Vietnam Veterans Memorial of 1982, and the National World War I Memorial of 2014.

9

FDR Memorial

Despite President Roosevelt’s wish for an understated memorial near the National Archives, the project approved by Congress after his passing was much grander. Instead of a monolithic monument, the FDR Memorial consists of a park-like landscape , with areas representing the four terms he served and the conflicts he led the nation through. It is also the only presidential memorial to include a tribute to a First Lady, in the form of a bronze statue of Eleanor Roosevelt.

10

Museums

The National Mall is one of the places with the highest concentration of museums in the world , most of them managed by the Smithsonian Institution. Among its most famous museums are the National Museum of American History, the National Museum of Natural History, the National Gallery of Art, the National Air and Space Museum, and the U.S. Holocaust Memorial Museum.

11

MLK Memorial

In 1963, the National Mall was the stage for Martin Luther King Jr.’s most famous speech, "I have a dream" , during the March on Washington for Jobs and Freedom. After his 1968 assassination, members of the Alpha Phi Alpha fraternity —to which King belonged— petitioned to build a memorial in his honor on the National Mall, and were allowed by President Clinton in 1996. The memorial features a split rock —inspired by the iconic line "Out of the mountain of despair, a stone of hope."— and a central figure depicting MLK Jr.

12

Parks and Tidal Basin

The National Mall's original plan included several landscaped areas, but they were not designed as part of it until 1901, when the area was cleaned to include open lawns and rows of trees lining the different sections . In 1882, part of the Potomac River was dredged to reclaim 628 acres of land, creating the Tidal Basin and adding space for many of the current monuments. In 1912, the city of Tokyo gifted Washington, D.C., more than 3,000 cherry trees as a sign of friendship, now an iconic part of the Tidal Basin landscape. In 1965, the parks in the National Mall were consolidated as a unit as the National Mall and Memorial Parks.