This gigantic monument hidden in the woods was built to thank the Dutch for sheltering Belgian refugees during World War I.

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

A set of beech hedges planted in the 19th century forms a tunnel that takes on a different appearance in every season.

The world's largest collection of ships in bottles.

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

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

Colorful and chaotic stacked hotel in North Holland.

The mysterious “claw marks” said to be left by the Devil on Pisa’s famous cathedral.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

A statue representing a lost Roman profession that was vandalized for centuries.

France's Lilliputian park displays over 100 of the country's monuments for visitor perusal.

A little sculpture with a large wardrobe.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

A modern reimagining of a medieval city gate.

The cutest way to stay safe in traffic.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

An Icelandic island full of diving birds and legend.

King Ludwig I's collection of beautiful women.

An unusual building on a "desolate hill" features the works of an Icelandic sculptor.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Famously misunderstood wonder of the ancient world

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."