A darkly erotic open-air statuary in Catalonia.

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

Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.

This chest hospital with a dark, haunted past serves as a fitting set for horror films and a paradise for ghost hunters.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

This cemetery features modernist statues as strange as its name.

A beautiful but toxic fountain of mercury.

Mountain where Jesus was first tempted by the Devil.

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

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

American soldiers discovered Europe's best one-liner at the end of World War II.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

A German apartment building hosting as many trees as human occupants.

A Cold War command center is hidden under an idyllic countryside.

Museum in a swimming pool where the water still flows.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

An old slaughterhouse now holds the largest collection of pig artifacts.

San Diego's most historic and haunted home.

The celebrated eyesore created by starry-eyed sweethearts.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

A beautiful maze marks where three countries meet.