No one knows why ancient labyrinths were built on this tiny northern island.

This 2,000-year-old stone maze is one of the oldest in the country, but its purpose is still a mystery.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This magnificent 18th-century hall consists of a maze of nearly a thousand interconnected passages.

A huge maze complex and whimsical miniature village in Tasmania.

A psychedelic labyrinth on the San Francisco bay.

The longest hedge maze in the world.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

Smoked mummies housed in mountainside caves.

Some of the specimens on display at the Leiden University Medical Center have been helping educate physicians since the 17th century.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

An enormous, inside-out glass globe built in 1935.

Once home to a thriving oil industry, this town now sits eerily abandoned.

In 1863, a woman buried her hard-drinking husband beneath his beloved booze.

Stuck in a bygone era, the oldest subterranean shopping street in Japan hides beneath the popular Asakusa district of Tokyo.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

An abandoned settlement originally established by British colonialists in the Andaman archipelago.

Ruins of a Carnegie family mansion on Cumberland Island.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

This Canadian island is a veritable garden of decay with countless abandoned structures dotting the landscape.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.