This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The home of the Dead Sea Scrolls is an abstract modernist dream.

Located outside Medellín, this Colombian park focuses on conservation and sustainability.

This city park wants you to take your shoes off.

Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

Two identical statues by Fernando Botero, one blown to pieces in a terrorist bombing, the other donated as a gift for peace.

Home to 23 voluptuous and instantly lovable sculptures by one of Latin America's most celebrated artists.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

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

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

A giant floating rubber duck-bunny painted with a different design every year.

Four giant movable street lights decorate this modern Rotterdam square.

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

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

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

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

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

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

Now a museum, this building was once a 14th-century monastery and the place where the founder of the Dutch nation lived and was assassinated.

The remains of a medieval wall discovered in the basement of a jewelry store.

The world's longest wildlife overpass provides Hilversum's critters with a safe alternative to trying their luck on the roadway.

Elegant marble and old vaults fill this historic Dutch bank turned office space.