There was a top secret plan during World War II to seal a group of soldiers inside the rock.

The defensive tower was built centuries ago to warn locals of Berber pirate attacks.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This fortified sand barrier dividing a contested territory is the longest minefield in the world.

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

The most impressive of Basel's three remaining city gates.

A futuristic rocket marks the spot where three borders meet.

A bridge that has seen many reiterations over its lifetime.

An icon of International Style architecture on the outskirts of Rotterdam.

This deceptively salty lake looks like blushing pink lemonade.

Thousands of colorful pirogues showcase ingenious craftsmanship at the largest fishermen port in Nouakchott.

The world's largest ship graveyard is the product of decades of corruption.

This record setting conveyor belt system can even be seen from space.

Sleepy fishing port not included on many maps.

At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.

Founded as a refugee camp, now a popular tourist spot.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

This medieval citadel once guarded the western entrance of the Pamir Highway.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

A massive stone fox oversees a Rotterdam elementary school crosswalk.

This rare volcano spews the strangest and (literally) coolest lava in the world.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

Also known as Napoleon's Canal, this waterway was created on the orders of the general, and construction was interrupted by Waterloo.