For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.

The largest flower auction house in the world.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

The ruins of a medieval castle that once belonged to one of the most powerful families in the Netherlands.

A grassy pyramid named after a French battle.

Colorful and chaotic stacked hotel in North Holland.

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

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

This miniature take on the Kremlin is one Dutch man's retirement project.

The history of sea-faring refuse and disaster is on cramped display in this Netherlands folk museum.

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

While most bridges allow roads to pass over water, this one allows water to pass over a road.

Building Men of War and Indiamen from Holland's Golden Age.

This giant wire frame man sculpture is crouched in contemplation.

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

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

This artificial ring island was built to hold cubic tons of polluted dirt.

Live out your childhood construction fantasies in this one-of-a-kind gyrating hotel.

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

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

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

This unique bridge physically lifts a piece of the road into the air to let boats pass by.