A museum dedicated to the alleged Roswell Incident.

A monument commemorating the role of Alaska's native Tlingit guides in the Klondike Gold Rush.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

Located along historic Route 66, this former gas station has been restored and converted into a museum filled with vintage motorcycles.

Mysterious meeting place for UFO hunters near Area 51.

The farthest you can be in the contiguous U.S. from a McDonald's location.

An eatery for UFO seekers on the Extraterrestrial Highway.

The world's smallest drawbridge.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The last bastion of Roman presence north of the Alps looms over a German town.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

Local lore claims this park is named after a young woman who jumped off a cliff.

More than a century old, this trading post resides in the Navajo Nation.

A motel dedicated to Southwestern nostalgia.

See massive fossils that are over 200 million years old in northeastern Arizona.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

Try the alligator at this fondue spot, which has been catering to "lovers and hedonists" since 1967.

Electrical pylon in the shape of Disney's beloved mouse.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

The world-record holder for the longest bridge stretching continuously over water.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.