One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

A wealth of local folk art, antiques, and curios, without ever leaving your car.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

This colorful New Orleans bookstore features rare and used titles, with a specialty in Cajun fare.

Try not to get slimed in Tribeca.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A rare view of a preserved Victorian science museum.

World's first "penitentiary," meant to be humane, drove men insane.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

An architectural oddity hides in plain sight on this iconic London bridge.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Murals of the wild parties once held on the frozen River Thames.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

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

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

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

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

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

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

An unusual round church in London with a Templar past.

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

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