This semi-secret storybook hedge maze is also the oldest garden in the city.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.

An ancient Egyptian temple in the middle of Madrid, Spain.

This cemetery features modernist statues as strange as its name.

Turntable anonymously received orphans, alms, and groceries.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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.

Picturesque intersection of witchcraft and ancient Christianity.

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

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Padlocks cover this rickety footbridge with love.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

100 year tradition of fist fights, marked by marble footsteps.

Go inside to really appreciate this 500-year-old technological masterpiece.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

An underground city of salt.

A memorial to the murdered Jews of Kaunas.

Mysterious craters may have been home to an ancient cult.

Man-made mineral caves house massive bat colony.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.