Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

With a history dating back to Victorian times, this architectural gem is a rare New York tourist haunt worth visiting.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

This monument is dedicated to Balto, the heroic Alaskan sled dog.

Italian cave with exceptional acoustics and an unsavory history.

Built on a medieval synagogue, this church has a burial crypt, tunnel system, and Jewish ritual bath hiding deep underneath.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

Recently celebrating its 25th anniversary, the garden opened in September 1997 to celebrate the men and women who have had the greatest impact on Key West.

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

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

The abandoned Bermudian home of a British naval leader is surrounded by crumbling sporting fields and the graves of convicts.

The world's smallest drawbridge.

The only sea in the world that has no land boundary.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

A unique bridge with an equally unique view.

The unusually large seat sits atop the base of a ruined temple.

Go surfing on this urban wave, "hacked" by local surfers.

A fearsome dragon clings to a corner of Munich's city hall.

The prototype for all Nazi concentration camps.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.