This massive crater in the middle of nowhere was used to train astronauts for moon landings.

This Argentinian hedge maze is an intricate tribute to a famous surrealist author.

World's strongest whirlpool.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A museum dedicated to the alleged Roswell Incident.

The highest bridge in America was built for an almost unnervingly small amount of money.

The largest source of fossilized insects anywhere.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

An ancient capital city that dates back 3,000 years and harbors many surprises.

The youngest volcano in Central America.

An ancient forest of the Paleocene Age turned to stone.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

A walk through the historic city center, under the streets of Seattle.

A wall of chewing gum moonlights as collective art.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

The modern birthplace of Irish freedom.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

Ample proof that watery ends make for well-preserved, millenia-old mummies.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.