The central mosque of this Mali town is entirely built from mud.

Climb inside an iron crystal magnified 165 billion times its normal size.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

The university library shaped like a giant piece of Swiss cheese.

Swiss vineyards in a UNESCO heritage site.

Florentine Renaissance style building in Switzerland, home to the world's largest taxidermy Great White Shark.

The bomb-ravaged remains of of a colossal Neptune.

Cold war icon and onetime "hole" in the iron curtain.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Elevated freight railway turned wildly successful urban park.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

These homes carved into the mountains seem to defy the laws of nature.

One of the most spectacular canyons in the world.

Vast stretch of tide-pools with a unique Moroccan charm.

An old slave lookout in Cuba's historic sugar cane fields.

A phallic shrine to a princess goddess in Krabi, Thailand.

The world's most active stratovolcano is almost always erupting.