The broken skateboards that became a poignant memorial to a murdered skater.

Eighty million natural history specimens call this gargantuan museum home.

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

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

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

London's smallest police station is barely the size of a phone booth.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

Hear the quietest sound from across the dome.

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

Banksy gives themself artistic license with this piece of London street art.

Catacombs turned marketplace.

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

The celebrated eyesore created by starry-eyed sweethearts.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

A beer pipeline runs beneath Bruges.

A little sculpture with a large wardrobe.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Go surfing on this urban wave, "hacked" by local surfers.

The fairy tale castle of the "fairy-tale king."

The most visited, and possibly most controversial, museum in Germany.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

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

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.