This stately council chamber hasn't changed since 1545.

An ingenious Dutch land art project uses grass ridges to cut airport noise pollution in half.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

A solid steel plane designed to catch fire over and over again.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

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

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

This giant radio telescope would be a rusting ruin if it hadn't become such a beloved relic.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

Every winter, this former planetarium is transformed into a massive, brightly-lit Christmas ornament.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

This monument pays homage to a classic Dutch tune.

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

Remarkably preserved body discovered in a peat bog.