Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Metro station with a claim to rock n' roll fame.

Cold war icon and onetime "hole" in the iron curtain.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

An old department store turned Nazi prison turned artist commune.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This bridge was constructed from the rubble of the infamous Bastille.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Europe's largest prehistoric mound – burial site of a legendary king?

Used as an example in one of the first dictionary entries for "museum" in 1706.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

A rotting air force base is now home to rare birds and scarce plants.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

Op-art architecture designed for happiness.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

This historic stone bridge has an entire neighborhood clinging to its sides.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Ship-sized kinetic sculptural fantasy.

Pop culture has helped to keep this iconic British building from being destroyed.

Giant, friendly pelicans in Central London, the most unlikely of places.