Immortal combat in a Moscow museum.

An abandoned relic of the city's failed experiment with below ground transit.

Inside this magical collection, you can buy recipes cooked up by church ladies, motorcycle clubs, and clowns.

The abandoned remnants of a little sanctuary for world peace that fell into disrepair.

More than 100 Hindu temples are slowly being swallowed by the forest.

5,000 skulls in memorial to those killed by the Khmer Rouge.

This Cambodian riverbed is covered in ancient Hindu carvings both above and below the waters.

This extensive collection of dead bugs may be the world's most idiosyncratic and personal insect museum.

The long underground cave's curiously shaped stalagmites have inspired many legends.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Seventeen oak trees sprout from the roof and walls of this tiny chapel without any visual evidence of roots.

Hideout of thieves, monks, and goat-footed gods.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Walk through a restaurant's refrigerator door to reach this hidden bar.

Museum of science fiction, utopias, and extraordinary journeys of the mind.

Large Hadron Collider and the Birthplace of World Wide Web.

The steepest classic funicular in the world glides along a dizzying incline.