This demon atop the Notre-Dame de Paris looks utterly bored.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

This castle resides in a valley known for immense bloodshed during the Middle Ages.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

Haunting and beautiful trees, doomed to die.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

The first mural ever dedicated to the women of the Black Panther Party.

Jail from the 19th century that was built by inmates.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

America's first federal monument.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A former major munitions plant that has been converted into a sprawling art space.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

This pun was simply waiting to come to life, and one defense contractor made it so.