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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This hidden collection of everyday objects illustrates life within communist Poland.

The largest coin pyramid in the world is a carefully balanced stack of over 1,000,000 pieces.

Things aren't quite what they seem at this mind-bending museum.

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

Protecting the dead from opportunistic body snatchers.

360° views of the city plus five floors of optical illusions and hands-on science.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

The world's most charming instant portrait studio also happens to be its smallest.

The world's northernmost aquarium looks like it has fallen over.

The great polar explorer is remembered in this far northern town, where he embarked on his final expedition.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

This lake-bound geographical marker sits at the point where three European countries intersect.