Largest outdoor staircase in the United States.

This replica of the Indian spiritual master Meher Baba's tomb stands unfinished in the New Mexico desert.

A rehabilitation center for confiscated, orphaned, and abandoned chimpanzees.

A series of idealized caves carved to entertain guests.

A historic castle that served as a backdrop to part of an elaborate extraterrestrial hoax.

Take a leisurely walk through the park to find the seven giant troll sculptures hidden throughout the park.

This mural condenses 96 miles of one of Scotland's best-known trails into a unique art display.

A former Canadian Pacific Railway station turned liquor store, the first and only station in Canada visited by British royalty.

A collection of obscure and vintage equipment used for television, film, and radio.

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

This gravelly, dangerous highway is the only road in the United States that leads to the Arctic Ocean.

A lonely memorial to the 107 victims of Pan Am Flight 812, which crashed in Bali in 1974.

At night, a grove of towering redwood trees growing through the pavement block out all light from the so-called “Dark Park” of Madrone Avenue.

Known locally as "the giant head," this 14-foot LED sculpture has a photo booth in the neck where you can have a 3D picture taken and displayed.

Trees emerge from the surface of this small man-made reservoir.

This museum is filled with an eclectic collection of unique inventions.

This section of the Kennet and Avon Canal has been designated the same level of heritage protection as Stonehenge.

Home to around 40 different species, this forest was also the setting for "Crouching Tiger, Hidden Dragon."

One man handcrafts "the best sake made outside of Japan" in a tiny desert town on Route 66.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

This fine-dining restaurant features native New Zealand ingredients and Māori cooking.

Founded in 1925, this folk school attracts students from across the country and preserves traditional Appalachian art.

This once rural mansion now sits in the heart of the city.