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

Switzerland's oldest public observatory is an important part of the Zurich cityscape.

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

An unfinished Serbian Orthodox church with 1,389 golden crosses planned to represent the Battle of Kosovo.

This memorial to a murdered empress took 20 years to design, then spent 30 years hidden away in storage.

After local authorities changed the design, the building's architect, Le Corbusier, wanted nothing to do with it.

On a teardrop-shaped island in the Danube, the ruins of a convent and the final resting place of a saint.

A peculiar trapezoidal building covered with wonderful humorous reliefs.

This strange sculpture is an enigmatic icon of this medieval German town.

This cheeky statue of a man defecating gold coins graces the facade of a medieval guildhall.

Towering sandstone rock formations where 'The Chronicles of Narnia' was filmed.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

Dine at a legendary after-hours joint frequented by David Bowie and Iggy Pop.

A historical observatory still in use by modern astronomers.

Krakow's own version of the Hollywood Walk of Fame.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

The best bagels in Berlin are tucked away in an independent bookstore.

A monastery considered a state-protected cultural monument of exceptional importance, founded in the 14th century by Serbian King Stefan Dečanski.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

This red light district plaza memorializes the Fab Four and their historic connection to the area.