Don't blink or you'll miss it.

Version of the French Riviera destroyed by the sea.

This former Soviet military base has over 10 original aircraft and an enormous amount of memorabilia on display.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

An eerie, derelict amusement park in Berlin.

This iconic high-rise residential block was one of the last to be built in the Brutalist style.

A wonderfully preserved example of London's 1960s-style high-density, low-rise public housing.

The remains of a historic football stadium that once hosted 50,000 spectators.

This toxic spoil heap found a second life as a ski slope, popular film location, and wildlife haven.

A celebrated bandstand at the center of what was once the worst slum in London.

The grounds of this Jacobean estate contain one of the oldest mulberry trees in England.

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

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

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

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

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The remains of Crystal Palace Great Exhibition of 1851.

Eighty million natural history specimens call this gargantuan museum home.

Hear the quietest sound from across the dome.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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