The attic of a four-century-old canal house hides a clandestine church.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

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

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

Protecting the dead from opportunistic body snatchers.

The most loyal of little dogs, or a Victorian era publicity stunt?

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Red frames showcase remnants of one of New York's original subway stations.

The greatest real estate coup of all time.

Try not to get slimed in Tribeca.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

There must be a pun in this haystack somewhere...