One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

The fifth-longest natural arch in the world, and the longest outside China.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Visitors to this library are in for a real-world education in modernist architecture.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

The last Oostende trawler to fish off Iceland is now a museum.

After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

This memorial museum chronicles the apocalyptic destruction of the First World War.

A once-magnificent collegiate church is falling into ruin.

This bike path was sunk below water level for maximum wonder.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

A little sculpture with a large wardrobe.

Cozy basement bar sports an inventory of over 2,000 beers.

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

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A 15th-century granary that played the role of futuristic slave quarters in the world of 'Star Wars.'

A hidden three-foot-wide house separates these two regal churches.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

One of the oldest colonial buildings still standing in South America.

The humble tomb of an Argentine general, hand-built by his son using stones brought down from the Andes.