An allegedly haunted mansion with a tragic, tawdry past.

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

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Designed to provide fantastic views of the surrounding rainforest.

A colorful, century-old cemetery of the Yaqui Indian Tribe hidden amid the suburban sprawl of Tempe, Arizona.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

The location where the iconic movie character declared it was time to go home.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

In Lago Superiore, the largest expanse of lotus flowers outside of Asia is hard to miss.

At night, this glittering musical tunnel draws skaters and photographers.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The actor best known for slapstick comedy is memorialized in his home town.

Pilgrimage site for star-crossed lovers.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Whimsical cookie-themed plaques mark the birthplace of the Fig Newton.

A tribute to Loveland’s most famous sweethearts, who helped spread cupid’s message to millions.

Towns with a resource known as "white gold," valuable enough to fight a war over, now stand ghostly and empty.

This historic Chinese tower was said to have been haunted by fox spirits but is now haunted by a grisly murder.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

For six months of the year, three giant mirrors direct a pool of sunshine onto this otherwise occluded town.

This 600-year-old home seems to defy physics.

As part of an 800-year-old tradition, a man parades through town covered in a suit made out of spiky burrs.

In the 1940s, Italian architect Mario Cavallè built a dozen of these round homes in northern Milan.

Nine Gardens in one—with tea service.