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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

This 1920s Dutch barge is now a floating bookstore.

Catacombs turned marketplace.

The commemorative stone column conceals a secret laboratory.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The fences outside some of South London's estates are made from recycled World War II stretchers.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

This overlooked street light once served as a KGB dead letter box.

Ship-sized kinetic sculptural fantasy.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

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

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

Eighty million natural history specimens call this gargantuan museum home.

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

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

A boardwalk winds above this beautiful bog full of wildlife and a rare type of turtle.

Canada's subterranean Cold War museum has doubled as a movie set.

The remains of a paranoid inventor's hidden workshop lie in beautiful ruins amidst a Canadian park.