A gigantic collection of teeny, tiny books.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A shrine of fire worship built on top of a natural flame.

Mysterious hillside with a continuously burning natural fire.

The world's largest private telescope collection hides in a secret wing of a Dutch auto museum.

In the Netherlands, one of the world's largest private car collections can be found.

A miniature city, once ruled by the Queen of the Netherlands.

A preserved building where the dead were once watched for signs of life.

A totem pole of heads to represent the different stages of life.

This pub has roots dating back to 1430 and serves as the setting for multiple Charles Dickens stories.

Legends say that this Art Deco apartment building almost became Hitler's British headquarters.

This ancient Egyptian obelisk still bears the wounds of World War I.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.

Cozy basement bar sports an inventory of over 2,000 beers.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

An enormous public square and parade ground built to celebrate Ghana's independence.

The clever workshop that has been designing some of the most unusual coffins imaginable.

Where thousands of slaves passed through the "Door of No Return."

This series of rope-style bridges brings visitors into a jungle layer that is usually reserved for birds and monkeys.

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.