An oddly conical beacon perched atop beautiful Irish cliffs.

Found in the waddenzee, this propeller has been put on public display as a reminder of the Second World War.

Nestled in the woods lies this land art project: a hybrid between park, maze and natural monument.

This Dutch windmill has its roots in an American invention.

This steel frame is a skeletal mirage of a lost 16th-century stone building.

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

Home to the world's oldest functioning orrery.

This large open-air museum showcases the ordinary lives of the people of the Netherlands and pre-industrial crafts and practices.

Various sculptures are a rotating exhibit in this small town.

The oldest skyscraper of Europe now stands dwarfed by the surrounding structures.

An awe-inspiring giant blue whale jaw bone stands in the center of this Dutch island.

The elegant manor house where Kaiser Wilhelm II lived in exile after World War I.

At the base of this tower, a plaque marks the original center point of the Netherlands.

A peculiar trapezoidal building covered with wonderful humorous reliefs.

A strange rock formation with numerous legends trying to explain it.

This enchanting mountain plateau celebrates spooky local folklore.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

Remarkably preserved body discovered in a peat bog.

This monument pays homage to a classic Dutch tune.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.