Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

Repurposed space and ultra-modern construction collide to create this geometric wooden spectacle.

Home to the world's oldest functioning orrery.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

A bizarre form of natural mummification was discovered in the church of this Frisian village.

This Dutch statue is a monument to the fictional shrew who brought doom to the city of Stavoren.

The 20-mile causeway that separates the Netherlands from the sea.

The struggle of a small Dutch island against the sea.

These picturesque ruins crumble beautifully into the ocean.

Modern art commemorates one of the first military actions of World War II.

These massive moving sand dunes have swallowed an entire village and are still on the run.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

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

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

The reason for the strange contortions in the trunks of these "drunken" pine trees in Russia is still a mystery.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

The mile-long pier stretches from a ruined fortress out into the Baltic.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

A museum marks and documents the site of the Titanic's launch.