For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

The mysterious white squirrels of this Illinois city are treated like sacred cows.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Native Americans built this circle of stones, which was used to predict astronomical events.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

The United States Capitol's former columns still stand.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

The largest piece of no man's land left on Earth.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Walk 2,300 feet above the ground on the "Troll's Tongue."

This tiny museum's sizable collection is jammed into a former underground public toilet.

A taste of the macabre Tokyo's ritzy shopping district.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

A restaurant modeled after feudal Japan, where the waitstaff are trained as ninjas.

Serving you alcohol with a side of insanity. Also, costumes!

Fine dining in the bizarre world of Lewis Carroll.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

A Catholicism-themed restaurant where sacrilege is on the menu.

A Japanese concept restaurant that feels like a party thrown by the monsters in your closet.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.