Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Visiting this café is like visiting the Austrian grandma you wish you had.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

Op-art architecture designed for happiness.

The beautiful baroque library of the Hapsburg empire.

Sitting atop a rock on Michamvi Pingwe beach, this restaurant becomes its own island at high tide.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

The remains of an ancient city-state along the Silk Road.

This one-time health resort was used by aristocrats around the world.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

Inspired by the Rialto Bridge in Venice, these three clustered bridges were just one part of a Slovenian architect’s grand vision.

Slovenia's first mosque is a striking mix of Islamic and modernist architecture.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.

This abandoned Slovenian military barracks has become a punky-political art squat.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

Relics from an era long gone, sit idle outside this Estonian museum.

The oldest continuously operating pharmacy in Europe.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

Relive a Polish uprising via an enormous, century-old cyclorama.