The tower was originally used as a chimney for the waste incinerator of St Johns Precinct and Market.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

The celebrated eyesore created by starry-eyed sweethearts.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

Hindu temple of the dead home to hundreds of long-tailed macaques.

Hundreds of Buddhas in a re-discovered Indonesian temple.

This Balinese sea temple is thought to be guarded by the hundreds of monkeys that live around it.

This tiny lake temple dedicated to a water goddess seems to float on the surface.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

Incredible labyrinth of man made caves.

Climb inside an iron crystal magnified 165 billion times its normal size.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A Museum of Psychiatry in a still-operating mental institution.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Now a museum, this building was once a 14th-century monastery and the place where the founder of the Dutch nation lived and was assassinated.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Stalactites and stalagmites in a beautifully lit cave.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.