Ruins from the Parthenon and petrified wood line the interior of one of the world's most famous monuments.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

Perhaps the most scandalous statue of America's first president.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

An impressive Sasquatch statue marks the spot of a fated Bigfoot encounter that changed a community.

The largest Walmart Supercenter in the United States, referred to affectionately as “Mallmart,” has served the residents of Albany, New York, since 1994.

Astonishing collection of helmets, scientific instruments, and medical models.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

The real-life site of Ichabod Crane's infamous gourd attack.

No monkeying around, this fountain was really named after the classic sci-fi film.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A menagerie of concrete animals brought together from across New York City's parks.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

Even for Egyptian royalty, the afterlife was bring-your-own-beef.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.

The highest point on the island known for buildings that touch the sky.

An eerie diorama that captures the majestic nature of a few prehistoric-looking beasts.

A whimsical, but often overlooked clock in Park Avenue.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.