Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

A student driver's nightmare.

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

Olfactory delights in San Francisco's Botanical Gardens.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Spend the night inside a two-story elephant villa.

Occult books, tarot, oddities.

A fiery crater has been burning in the Karakum Desert since 1971.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

One of the world's largest Tesla coils.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

The world's largest bioluminescent area was undiscovered by science until 2005.

Started nearly 100 years ago, this science experiment just keeps on going, ever so slowly.

A gargantuan crystal kingdom.

Off-limits and full of venomous pit vipers, Brazil’s Snake Island has a frighteningly apt nickname.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

Mysterious Spanish catacombs of unknown origins.

The world's largest wooden structure.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.