A former customs station on the border of Germany and the Netherlands.

Atop this former dutch railway office sits an interstellar work of art.

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

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

The struggle of a small Dutch island against the sea.

This mine is home to the largest man-made hole in Europe.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

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

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.

Watch the local Netherlands birds from inside this giant eco-egg.

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

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

This giant wire frame man sculpture is crouched in contemplation.

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

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

Massive galleon from a box-office bomb docked in Genoa.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

This memorial museum chronicles the apocalyptic destruction of the First World War.

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

This abandoned Belgian fortress is purposefully being left to nature.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

This still-celebrated home was a radical architectural experiment in 3D De Stijl.