The island residents are known for taking their quirky sense of humor with them to the grave.

The avant-garde design was able to bypass strict Soviet regulations on architecture.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

A memorial to the monk who set himself on fire to protest the persecution of Buddhists in Vietnam.

The saga of the massive nut begins and ends in Texas.

This giant disembodied horse head seems to balance impossibly on its nose.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

Hundreds of mummies in a silent room, some with eerily pained expressions preserved on their faces.

With over 12,000 different species of plants, this botanical garden is Japan's oldest and most diverse.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

One of the world's largest pianos is displayed in the workshop of the man who built it as a teenager.

A Tudor-style castle in Brazil holds one of the world's largest armory collections.

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

A tilted half-timbered house from 1672 is built into a salvaged segment of a medieval wall.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

The two-cell building in Nebraska was briefly owned by a teenage boy and then a Hollywood dummy.

Russia's giant concrete QWERTY keyboard is likely the largest in the world.

The iconic castle that withstood a magnitude 6.2 earthquake has become a symbol of resilience.

The elevator hidden in a smokestack on Roosevelt's yacht now serves as a monument to the former president.

With nearly double the depth of the Grand Canyon, this Peruvian canyon is one of the deepest in the world.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

Captured in 1968, the Cold War spy ship is the only U.S. Navy vessel being held by a foreign government.