A lush indoor jungle fills this bustling Madrid transportation hub.

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

Some claim these desert ruins are from the legendary "Atlantis of the Sands."

Home to a giant switchblade and one of the world's largest collections of pocket knives, this museum is a cut above the rest.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

In paradise, feral pigs have claimed an island all to themselves.

This Italian dam is covered in salt-hungry goats who manage to scale its almost vertical face.

Former drug lord’s manor, now a theme park. Watch out for the hippos.

A floating underwater hotel, created by a Swedish artist.

When Azorean green tea meets volcanic hot springs water, a luminous brew is born.

This spectacular mosque houses the second-largest chandelier in the world.

Ingenious bakery opens up the first Cupcake ATM at their flagship location in Beverly Hills.

Nature took her revenge on the "Wickedest City in the World."

This fantastical house shaped like a seashell brings aquatic design to architecture.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

An ingenious solution to a tricky engineering problem, this spiraling bridge takes drivers for a dizzying spin.

This chimerical bridge/tunnel appears to dead end right into the sea.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

This collection of 80 polarizing foods aims to challenge your subjective notions of repulsion.

The pharmacy's retro ice cream mixer is one of the last of its kind.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

The largest drain hole in the world.

The largest Star Wars collection in the world is its own galaxy of collectibles.

Massive prehistoric mammals used these stones as oversized scratching posts.