"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

A fortified city, home to a remaining population of five families

One of the most spectacular canyons in the world.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Mountain where Jesus was first tempted by the Devil.

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

A little sculpture with a large wardrobe.

Hiding the longest subterranean river known in the world.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

A grassy pyramid named after a French battle.

A bizarre form of natural mummification was discovered in the church of this Frisian village.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.