One of the world's largest pyramids stands within El Mirador, the "lost city of the Maya."

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

This lonely memorial marks the supposedly haunted site of a brutal 19th-century murder.

This historic Ohio bridge is adorned with fanciful locks left behind by loving couples.

This reconstructed ancient fort was home to one of the few horse training rings in the Roman Empire.

These roaring primates were considered a divine creature in the cosmology of the Maya.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

Walking through this narrow gorge will make you feel like you've fallen into a fairytale landscape.

The island houses the ruins of a secret nuclear fusion lab that once employed high-profile Nazi scientists

An abandoned masterpiece of Soviet Brutalist architecture.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

This historic graveyard was partially paved over to create a streetcar line.

A museum dedicated to the famous Mexican illustrator's iconic calaveras.

The abandoned ruins of a failed resort hide on this verdant, picture-perfect island.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

This small Catskills village has six independent bookstores and more bookshops than restaurants.

On a remote island, legend has it that a fiddler and his wife were turned to stone.

305 homemade stone stairs wind their way up the Hamilton escarpment.

A museum at a Chinese university is the first of its kind in the country.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

Home to a vast and influential collection of Shakespeareana.