Left by the Devil, an ancient quarry or just plain old erosion, this enigmatic rock pillar rises 28 feet from the hillside.

How did a literal hole in a wall become one of the top-rated tourist attractions in this English town?

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

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

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

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

The hidden lair of an alchemist rediscovered in a 2002 flood.

A wooden statue commemorates a local celebrity who became a national sensation for his height.

This Bronze Age boat was found buried remarkably intact in an English gravel pit.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

Perhaps the most spectacular grotto along the Algarve coastline.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

Inspired by a dream, a hermit carved out a home in this sandstone bank to live a life of contemplation and prayer.

This home of a taxidermy hoarder is among the grandest and most singular of historic English estates.

This 2,000-year-old tree inspired the nursery rhyme "Rock-a-bye Baby."

The final resting place of England's most notorious bandit.

This bare, bronze lad in a lone sock sits in the middle of Loughborough’s town center.

This antique prison is a tourist attraction with a sordid past.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

The largest greenhouse in the world is home to over one million types of plants.

This ruined 15th-century hermitage is steeped in myth and mystery.

Cockatoo Island is a Heritage-listed island in the middle of Sydney Harbour.

A open air theatre built on a cliff by an eccentric British woman.