The first museum in the world devoted to sexual gadgetry.

The fountain marks the area where hundreds of accused witches were burned at the stake.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Tubing through a cave lit with glowworms is a magical underground experience.

A curious collection dedicated to human and animal anatomy and pathology.

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

Monasteries on rock pillars, once accessible only by frayed ropes.

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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Northern Ireland's Brobdingnagian stepping stones.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Where once there was a train station bathroom, there is now this German burger joint.