The Habsburgs' royal collections of art and wonders.

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

Baroque celebration of the end of the Great Plague of Vienna.

Op-art architecture designed for happiness.

An ever-growing literary collection housed in the apartment where the Russian author penned his final novel.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

Gargantuan home of Russian science.

One of the world's tallest statues is also one of its most hated.

Stalinist skyscraper built with help of cryotechnology.

Home of the future Emperors of Russia.

The avant-garde design was able to bypass strict Soviet regulations on architecture.

Former headquarters of the KGB.

The tallest hotel in Europe.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

A little sculpture with a large wardrobe.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Strange rumors surround the artist who created these solemn metal guard dogs.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.

A cemetery for Slovenian notables also serves as a popular recreation space.

This small Slovenian town has become a magnet for microbreweries.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.

The "dragon babies" of southeastern Europe.

A whimsical bridge adorned with decorative dragons.

A miniature train-ride through Slovenia's largest cave system.