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American Goldfinch

If you’ve spotted a drop of sunshine landing on your feeder sometime in the summer, that’s the American Goldfinch. Males turn a vivid yellow each year thanks to a complete molt, usually finished by late May.

They’re found coast-to-coast but are especially common in the northern and central U.S., where they favor open meadows and backyard thistle feeders. Unlike most songbirds, they nest late, often waiting until July when thistle seeds peak. If you see a tiny bird—barely 5 inches long—bouncing through the air in a roller-coaster flight pattern, you’ve found the American Goldfinch.

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Blue Jay

Blue Jays are known for being loud, confident, and colorful. Throughout the eastern half of the U.S., from Florida to Maine, they flash electric-blue wings marked with black "bar codes." Their blue color is actually a light trick: microscopic feather structures scatter wavelengths to create the hue. Another fun fact: back in the 1970s, researchers discovered they can mimic hawks, a clever way to scare other birds away from food.

3

American Robin

Long before digital calendars, people guessed the seasons thanks to this bird. The American Robin’s spring chorus has been recorded in journals as early as the 1800s, marking the end of winter across most of the U.S. They’re widespread, found in all lower 48 states and even in Alaska during summer. Robins stand upright, tugging worms from lawns with that unmistakable rusty-orange chest. Adults measure about 10 inches long, roughly the size of a small paperback book.

4

Ruby-Throated Hummingbird

If you’ve ever seen a green flash zip past your porch faster than a camera shutter, it may have been a Ruby-throated Hummingbird. It is the only hummingbird species that breeds east of the Mississippi. It weighs 0.2 ounces—as little as a nickel!—yet crosses the Gulf of Mexico during migration. Males display an iridescent red throat that lights up when sunlight hits at the perfect angle. A single feeder with a simple sugar solution can lure them in from May through September.

5

Northern Cardinal

Northern Cardinals look like Christmas on wings, and it’s easy to see why. Males glow bright red, while females wear warm browns brushed with hints of red. They live year-round in the eastern and central U.S., especially in woodlots and suburban yards. Cardinals measure about 9 inches long and crack seeds with thick, powerful bills. Their "what-cheer!" call is one of the most recognized bird sounds in North America.

6

Song Sparrow

At first glance, this little brown bird might look like one of many, but listen closely. Song Sparrows have been studied for their remarkable vocal variety; a single male may sing more than 10 distinct song types. They’re common nationwide, from the Atlantic to the Pacific, but differ subtly by region. One reliable ID feature: a bold dark spot in the center of the chest. They’re small—around 6 inches—but their voice carries surprisingly far.

7

Black-Capped Chickadee

A bird the size of a tennis ball—about 0.3 ounces—with the confidence of a much larger creature: that’s the Black-capped Chickadee. They have a surprisingly sophisticated communication system. In fact, biologists discovered that the number of "dee" notes in their call changes depending on the threat level of predators.

Found across the northern U.S. and in the Rockies and Appalachians, they sport crisp black caps and snow-white cheeks. Offer sunflower seeds and they’ll visit you all winter.

8

Northern Mockingbird

What if one bird could perform an entire playlist? Northern Mockingbirds—common throughout the South, Midwest, and many western suburbs— can mimic over 100 sounds, from other birds to squeaky gates. In the 1960s, scientists confirmed their habit of singing at night, especially males guarding territory.

They’re roughly 10 inches long, the size of a stretched-out flashlight. Their slender gray bodies and white wings make them easy to spot when they swoop from fence posts.

9

Baltimore Oriole

The Baltimore Oriole can be described as "a flame carried by wings", since males sport brilliant orange while females show softer yellows.

These bright orange migrants breed across the Northeast and Midwest before wintering in Central America. Their hanging pouch nests—up to 8 inches deep—are woven with fibers like tiny hammocks swaying in the breeze. Orioles love tall shade trees and can hang upside down to sip nectar or jelly.

10

American Crow

Think of crows as neighborhood detectives. Studies show they can recognize human faces and remember them for years. Found in every U.S. state except Hawaii, American Crows are large—about 17 inches long—and solid black from bill to tail. Their aerial circling and communal roosts, sometimes numbering thousands, are especially common in the Midwest. They travel in family groups and announce their presence with a clear "caw!"

11

Black-billed Magpie

If you’ve ever driven through the Rockies or the Great Plains, you’ve likely seen this striking bird swooping low over fields. Black-billed Magpies, common from Nevada to the Dakotas, wear glossy black feathers with a blue-green sheen and long tails that can reach 12 inches—nearly half their total length. Their dome-shaped stick nests can be 3 feet across, and they thrive in open country and ranchlands.

12

Tufted Titmouse

One of the most charming feeder visitors in the eastern U.S., the Tufted Titmouse has a soft gray coat, a tiny crest, and warm orange patches under the wings. Though small—around 6.5 inches—they have a bold, ringing call: peter-peter-peter . Their range has expanded steadily northward, partly thanks to backyard feeders. Another fun fact: titmice store seeds one by one in tree bark, creating "pantries" they revisit all winter.

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1

National Mall’s hidden tunnel (Washington, DC)

The National Mall landscape in Washington, DC, is so familiar that it’s hard to imagine anything hidden beneath it, but there is more going on below the surface than most visitors realize.

Beneath parts of the Mall, a network of underground tunnels connects buildings like the Smithsonian Institution Building, a.k.a "The Castle", with other Smithsonian facilities, including the National Museum of Natural History. They’re mainly used for utilities, secure staff access, and behind-the-scenes operations that keep the museums running smoothly.

2

Mount Rushmore’s secret chamber (Keystone, SD)

When you look at Mount Rushmore, the first thing you notice is the four faces of George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln, but there’s more than meets the eye. Hidden behind Lincoln’s head is a secret chamber known as the "Hall of Records," a place visitors have rarely ever seen. It was the idea of sculptor Gutzon Borglum, who imagined it as a grand room to hold important US documents and tell our story as a country. Construction began with that goal, but the project was never completed. Today, the chamber remains unfinished, but it's there, waiting to be visited someday.

3

The Las Vegas sign is in another city (technically, Paradise, NV)

Do you have the classic picture in front of the iconic "Welcome to Fabulous Las Vegas" sign? If you snapped it and then drove to another city, we hate to break it to you, but you weren’t in Las Vegas.

The famous sign, installed in 1959, actually sits a couple of miles outside the city limits. In fact, the sign and most of the Strip are technically located in the towns of Paradise and Winchester, unincorporated communities in Clark County, Nevada, not within Las Vegas itself. And that’s no accident: much of the Strip and its casinos were originally developed outside the city in the 1950s to avoid municipal taxes and regulations.

4

Fragments of the Antarctic ice sheets (Denver, CO)

Did you know that the Mile High City stores miles of ice from Greenland and Antarctica? Ok, but how?

At Denver’s National Ice Core Laboratory, part of the Federal Science Center, the ice is kept at around -32.8°F. Researchers study it not just to understand Antarctica itself, but also to inspect Earth’s history. Some of these blocks of ice are hundreds of thousands of years old, and from them, scientists can reconstruct ancient temperatures, track greenhouse gas levels, and even identify major volcanic eruptions preserved in the layers.

5

The hatch at the top of City Hall Tower (Philadelphia, PA)

Counting the statue of William Penn at its summit, the tower of Philadelphia City Hall rises about 548 feet, making it the tallest municipal building in the United States. But hidden high above the street, the statue conceals a little-known secret.

At its base is a small hatch, originally built to give workers access for maintenance. It offers an incredible vantage point over the city, but getting there isn’t easy. To reach it, you have to climb narrow stairways and walk through tight, elevated passageways. Would you dare give it a try?

6

A 112,544 square-foot underground bunker (White Sulphur Springs, WV)

The tense atmosphere and threats of the Cold War led to the construction of thousands of underground bunkers across the US. And one of the most impressive is right beneath the Greenbrier Resort in White Sulphur Springs, West Virginia.

Buried 720 feet into the hillside, this 112,544-square-foot bunker was created to shelter all 535 members of the US Congress in the event of a nuclear attack. Built between 1958 and 1961, it was sealed behind a 25-ton blast door, and it remained a protected secret for more than 30 years.

7

Catacombs underneath City Market (Indianapolis, IN)

In downtown Indianapolis, the City Market has been a gathering place since 1886, filled with local vendors, cafés, and shops. But there’s more to it than what you see above ground. Beneath the market lies a network known as the City Market’s "catacombs."

Despite the name, the reality isn't quite so macabre; they’re a series of brick archways that once supported Tomlinson Hall, a huge market building demolished in the mid-20th century. Today, this underground space remains as a hidden piece of the city’s past, but unlike many places on this list, it’s occasionally open for guided tours.

8

One of history's biggest art heists (Boston, MA)

We all know Boston as the "birthplace of the American Revolution," home to events like the Boston Massacre and the Boston Tea Party. But there’s another chapter of its history you don’t hear about as often.

Just over 30 years ago, Boston was the scene of one of the biggest art heists in history. In the early hours of March 18, 1990, two men disguised as police officers entered the Isabella Stewart Gardner Museum, overpowered the guards, and stole 13 invaluable works of art, including pieces by Vermeer, Degas, Rembrandt, and Manet. To this day, the case remains unsolved, and a multi-million-dollar reward is still offered for information.

9

One of the quietest places on Earth (Minneapolis, MN)

Where do you think the quietest places on Earth are? You might imagine remote landscapes far from civilization, but one of them is actually right in Minneapolis, Minnesota.

Inside Orfield Laboratories, there’s a room with no windows or natural light, an anechoic chamber that absorbs nearly all sound. That’s right: it blocks almost every noise, making the space even quieter than a vacuum. Visitors say the silence is so intense that you can hear your own heartbeat and even the faintest movements of your body. Simply incredible.

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A strange law (Los Angeles, CA)

Why would a city actually pass an ordinance saying that licking toads is a bad idea? That’s Los Angeles, a place full of quirks, some charming, some downright strange. Even its laws can be unusual.

The Colorado River toad, found in parts of California, secretes chemicals that can have powerful psychoactive effects on humans. Because of the risks, both possession and use of this substance are illegal statewide. In 1994, cases occurred, including a teacher who was arrested for possessing the toad substance. But Los Angeles went a step further, passing an ordinance that specifically bans licking these amphibians. And let’s be honest, the poor toad probably doesn’t enjoy it either.

1

Philadelphia: Jawn

Meaning: used as a placeholder for a noun.

When in Rome, do as the Romans do. When in Philly, be aware that the word jawn can and will be used in every sentence, no matter if the jawn in question is a thing, person, event, or place. If it’s a noun, it can be jawn’ed.

2

New England: Grinder

Meaning: a sub sandwich.

Subs must be one of the most widely known American sandwiches, and rightfully so. Its possibilities when it comes to fillings are seemingly endless, no matter your personal tastes. But you must consider that not every sub is called a sub. If you are passing through New England and fancy a sandwich, looking for a grinder will get you there quicker.

3

Midwest: Schnockered/ Schnookered

Meaning: Schnockered: wasted/ Schnookered: scammed

Is there a connection between excessive alcohol consumption and being easy to deceive? Midwesterners apparently think so, because they use very similar terms for both situations. We tend to agree; nothing good can come from doing business while under the influence.

4

New York: Schlep

Meaning: a difficult task, to carry something with difficulty.

As far as hectic places go, New York seems to be leading the rankings. No wonder they have a dedicated slang repertoire for difficult situations. If you are planning on visiting the Big Apple, take it easy; you will most likely encounter a schlep.

5

Florida: No-see-ums

Meaning: tiny biting midges.

Ah, Florida! The land of cruises, alligators, and invisible attacking bugs. These welcoming critters are known for attacking at dawn and leaving itchy marks that will sting for days. They go by the government name of Ceratopogonidae, but the no-see-ums nickname seems more accurate.

6

Boston: Regular

Meaning: coffee with cream and sugar.

Forget about americanos, lattes, and espressos, a regular is the Boston way to go. Associated with a popular Dunkin’ order, it will come already creamed and sugared. Not advisable for diabetics and lactose intolerants.

7

Puerto Rico: A mi, plín!

Meaning: I don’t care.

Puerto Rican slang can be hard to decipher even if you speak some Spanish, but this makes it even more unique. This phrase —literally translated as ‘to me, plin’— is commonly used to express that something or someone is of no concern to you. What is a ‘plin’? We don’t really know, but to us, plin!

8

Pacific Northwest: The mountain is out

Meaning: there is good weather

Mount Rainier is one of the icons of Seattle and the Pacific Northwest, even though the stormy weather can often make it difficult to admire. On the days when the sky is clear and cloudless, this natural wonder "is out" and can be seen in its entirety. For the locals, the mountain being out has become synonymous with lovely weather and sunny skies.

9

Texas: Fixin’ to

Meaning: about to.

We are including this phrase as Texan slang, but you might hear it from Southerners of other states. What do they use it for? Not to talk about repairs, but to say they are about to do something or getting ready for something. Important: do not confuse it with ‘fixins’, a way to refer to side dishes or condiments.

10

Alaska: Sourdough

Meaning: a long-time resident.

Alaska is filled with natural wonders, but it has always been a tough place to live in, especially during the time of the pioneers. These brave people relied on a few food sources, one of them being sourdough starter to make bread and biscuits. In time, seasoned Alaskans came to be referred to as ‘sourdough’, as a way of honoring their resilience and love for the territory. Opposite to a ‘sourdough’, you can find a ‘cheechako’ or newcomer.

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Utah: RM

Meaning: someone who returned from their missionary service.

Utah is known for many things, one of them being its high number of Church of Jesus Christ of Latter-day Saints members (commonly known as Mormons). Many members of the Church choose to serve as missionaries, an activity that can take them to a different state or even a different country for up to two years. Once they come back, they might be referred to as RM, or ‘returned missionary’.

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Hawaii: Da kine

Meaning: placeholder for something.

If you are in Hawaii, you might notice locals using this phrase to refer to various things, similar to how other English speakers use ‘whatsit’ as a placeholder. A common phrase in Hawaiian Pidgin, ‘da kine’ can be used for objects, people, places, ideas, and much more.