This giant temperature attraction created some giant electric bills.

The most isolated mailbox in America lets desert travelers record their passing.

The ghostly remains of an accidental sea.

A hand-built folk art installation covered with messages of God's love.

This enormous World War II relic is one of the largest wooden structures in the world.

Oldest building in California still in use.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

This unusual lava tube spouts seawater during high surf.

This legendary urban waterfall creates a dazzling display of rainbows.

Submerged lava formations create incredible waterworks.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A museum of carnival attractions where you are invited to ride the rides.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Two stunning 17th-century libraries and a cabinet of curiosities.

Macabre astrological automaton clock dating to the late 1400s.

A Jenga-style cylindrical tower of books that appears to go on forever.

The first museum in the world devoted to sexual gadgetry.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This automated sculpture of two men peeing will spell out text messages with their micturition.