A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

Air-raid tunnels hidden beneath this opulent hotel provided shelter and an escape route—and one of the world's longest slides.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

The gravestone of the man who designed the plastic pink flamingo is adorned with his most famous creation.

This humble hole-in-the-wall is home to an incredible pig ear sandwich and serious civil rights history.

This family-owned bakery is one of the last places in Brooklyn to sell the Nation of Islam–inspired bean pie.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

This North Carolina store preserves a historic moment in America's movement for racial equality.

Parts of the civil rights movement unfolded in this historic eatery, helmed by the "Queen of Creole Cuisine."

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This ramshackle ghost town is comprised of mining-era buildings collected from around the region.

America’s oldest community theater, this Boston club has been in operation since 1877.

The palatial McDonald's that inspired Wesley Willis.

A European-style bath house in Chicago.

In Chicago, a pizza-enthusiast has opened a museum dedicated to the history of pizza.

A display of magnificent stained glass windows is the first exhibit of its kind.

A Museum of Holography frozen in 1974.

A century-old network of freight tunnels underneath the city's historic business district.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

A chance to follow in the footsteps of the word's most legendary animator.

An eccentric park and pool.