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

Tucked among the sand dunes overlooking a Welsh beach, a real-life tribute to a fictional elf.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

Much of what constituted mid-century Liverpool now litters a beach outside of town.

A hundred copies of Antony Gormley's naked body stare out across the water.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

This very ornate Victorian gateway seems completely out of place in the modern industrial city of Warrington.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

These dilapidated planes are now a canvas for graffiti artists.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

The skeleton of a whale that beached itself in this Irish town is now on display in their public park.

This memorial was created by an Irish nurse who lived in New York City during 9/11.

A strange egg in a mucky bog of western Ireland marks the spot of an aviation milestone.

This historic spot was where America's involvement in the Vietnam War officially came to an end.

This French colonial post office is arguably the grandest in all of Southeast Asia.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.