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

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

The topiary maze at the Habsburg hunting lodge.

The beautiful baroque library of the Hapsburg empire.

This former insane asylum now holds a pathological anatomy museum.

The patron saint of spinsters grasps a container of dried blood.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

One part local history, 99 parts gruesome haunted house.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

An incarceration museum on the spot of possibly the oldest prison in England.

Catacombs turned marketplace.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Hear the quietest sound from across the dome.

A kaleidoscopic warehouse-maze of handmade neon signs.