The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A Cold War command center is hidden under an idyllic countryside.

Each year melting snow turns these Austrian hiking trails into scuba zones.

A unique opportunity to stay the night in retrofitted sections of sewer pipe.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This is why we can't have nice things on the Incan Trail.

Leave the wardrobes and sweets to British schoolchildren, Shanghai's got a Coke machine that leads to booze.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

This ghost town in Belgium will lose its street art when it ceases to exist.

Hiding the longest subterranean river known in the world.

Lavish royal estate punctuated with heated greenhouses.

Ancient man-made caves underneath small town Belgium.