This massive fiberglass Gulliver turns every visitor into a Lilliputian.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

A Romanian church built from one single oak.

No one knows who built this strange cave of worship or exactly why.

An artistic tribute to the famous singer, just around the corner from where he was born.

This London plaque marks the spot where David Bowie's famous alien made his debut.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

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

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

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

Secret refuge and museum of the Duke of Florence.

The middle finger of modernity.

This museum is rotten with a century of wax medical deformities.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

A mocking tribute to the past and modern leadership of Prague.

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

Countless grotesque faces stare out from this eerie Prague art wall.