Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Where royalty waits in the height of luxury.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Europe's official "zero-level," the equator of elevation.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

A measuring mishap led to these artificial stone ladies losing their stomachs.

Victorian-era Londoners really wanted to believe this 17th-century cistern was actually an ancient artifact.

The Art Deco artwork depicts gilded carriers of deadly illnesses.

A subterranean display of public art and architecture.

On high feast days, the entire blue-glass front of this modern church opens up to reveal the small wooden church inside.

A stairway to heaven, or to nowhere at all.

One of the most easily accessible examples of the rare 1960s UFO houses.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

A fearsome dragon clings to a corner of Munich's city hall.

The patron saint of spinsters grasps a container of dried blood.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

More than 200 unconventional musical instruments that anyone can play.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

Wander the sprawling living museum on the site of one of a 16th-century community.