The largest earthwork effigy in the world.

Where beautiful signs live on forever.

A suspended garden, now gone, once hung in the middle of this abandoned church.

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

Robots, lasers, and whoopee cushions, oh my!

The home of 1.5 million wood letters for printing is still a functioning workshop.

This freshwater spring fills with 10,000 gallons of water per minute.

House built with over 60,000 glass bottles.

Week-long festival in the baby food capital of the world.

Take a drunken tour inside the world's largest known geode.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

Renowned restaurant tucked in a cave once occupied by buccaneers.

Largest pre-Lent festival in the Dominican Republic.

Small, privately owned island divided between Michigan and Ohio with abandoned vacation homes and a derelict lighthouse.

Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

Abandoned concert venue legendary for its rock counterculture.

Over a thousand feet beneath the Detroit streets is a subterranean metropolis few are allowed to enter.