A spherical "micro-nation" in the heart of Vienna.

Op-art architecture designed for happiness.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

When you're a great Russian Tsar, even your vomit gets a statue.

A little sculpture with a large wardrobe.

Cozy basement bar sports an inventory of over 2,000 beers.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Founded as a refugee camp, now a popular tourist spot.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

The earliest known map to show America, discovered by accident at a Paris bookshop.

An ancient Egyptian temple in the middle of Madrid, Spain.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

First mosque in Canada, second in North America.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

A crucified and bearded female saint.

Looming communist pillar with a Czech twist.

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

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.