Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Home to the "Circus" trees created by Axel Erlandson.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

A toxic ghost town sitting atop a massive coal fire.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Ruins of a once-prized railroad station in New York.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

France's most famous cemetery, with some of its most curious tombs.

This Scandinavian island is the site of the first modern observatory.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Copenhagen's celebrated theme park and gardens.

A spherical "micro-nation" in the heart of Vienna.

Mountain where Jesus was first tempted by the Devil.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

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

Ozymandias’ time-keeping temple.

The largest known Ancient Egyptian obelisk.

An abstract monument to a symphonic composer.

The Guardian of Tallinn.

A subterranean house of worship carved right out of the bedrock.

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