Lavish royal estate punctuated with heated greenhouses.

Museum preserving torture methods from the past.

Wind power station for making famous Ketel One vodka.

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

Of course Salvador Dalí lived in a castle...

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

This castle-fortress is a living example of the transition from medieval defenses to modern fortifications.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

One of Belgium's oldest hospitals saw patients from the 13th to 20th centuries before becoming a museum.

A 141-foot wave of crashing lumber guards the entrance to the Grand Place in Mons.

The world's tallest boat lift stands as a massive piece of industrial tourism.

After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.