The former home of a trailblazing surrealist is still filled with haunting dolls and grim paintings.

Explore 400,000 years of humans' "battle against darkness" in this offbeat but thorough lamp museum.

This collection of solar timekeepers includes the world's first digital sundial.

The tiny Belgian town's ancient version of Mardi Gras involves eerie wax masks, sticks for warding off evil, and ostrich plume hats.

A giant bug impaled on a 75-foot-tall needle.

Dummies recreate radiological discoveries from history.

A visionary precursor to the Internet made of index cards.

A fantastical bed and breakfast with magically unique rooms.

Only museum in the world devoted to bookbinding and book arts holds a permanent collection representing five centuries.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

Housing the groundbreaking maps and globes of Gerard Mercator.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

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

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Descend into the tunnels to experience the life of a coal miner.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

Christ's blood preserved in a Belgian town.

A Museum of Psychiatry in a still-operating mental institution.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Medical history with an amazing, if frighting, collection of wax diseases on display.