Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

An ancient Egyptian temple sits within a modern European museum.

A miniature city, once ruled by the Queen of the Netherlands.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

The location of the world's first telescope demonstration.

In the Netherlands, one of the world's largest private car collections can be found.

A nuclear reactor created for Eisenhower's "Atoms for Peace" campaign is now used for research at a Dutch university.

The Netherlands' first car tunnel has an unusually rectangular shape.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

Four giant movable street lights decorate this modern Rotterdam square.

An enormous Polaroid picture adds an artistic flair to Rotterdam.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

A modern reimagining of a medieval city gate.

Yup, that's a 330-foot yacht passing over the highway.

Constructed on the ruins of a convent, this tower saved countless lives.

This beautiful example of neoclassical architecture is one of Uruguay's most treasured cultural gems.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

Abandoned bull fighting ring, slowly falling apart in Uruguay.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A little sculpture with a large wardrobe.

“And the Lord said unto Johan, build for thee an ark for the end of the world is approaching.”

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.