The only residents of this abandoned housing development full of identical castles are stray cats and dogs.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

Iconic red and white plaques show the creative names invented to navigate the city streets.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A hip bar decorated with walls of golden skulls.

A natural tidal swimming pool is ringed by bizarrely artistic lava rock formations.

In this pristine Ecuadorian hippie town, residents remain active well into their eighties and nineties.

The second tallest railway trestle bridge in America.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

A self-built castle made by a mysterious man.

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

A chapel on a volcanic core, marking the end of a successful journey.

An emerald-green grotto just a short trip from Austin.