This hidden green space is the city's second largest conservatory.

A hands-off space for graffiti artists to hone and display their skills.

Rebuilt remains of a temple to Roman god Mithras.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

The commemorative stone column conceals a secret laboratory.

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

A memorial for public executions that dates back to the 14th century.

A Looff creation in Santa Monica best described as “a California-Byzantine-Moorish-style fantasy.”

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

A second generation sun-powered marvel lights up the night.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

A moss-covered statue of a Japanese Buddhist deity stands at a quiet temple in downtown Osaka.

Surreal giant face-pillars welcome visitors from across the globe to this hotel.

Marvel of green building techniques that sings with the wind.

The largest stone moai on Rapa Nui.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The world's most remote airport.

The ominously named cave is home to some remarkable ancient art.

A volcanic crater that visitors can look inside.

Colorful and chaotic stacked hotel in North Holland.

Yup, that's a 330-foot yacht passing over the highway.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.