The house that took a plunge into the facade of a museum.

A non-stop elevator ride in Vienna's city hall.

A set of outdoor stairs named in honor of a famous Austrian artist.

More than a millennium's worth of municipal records preserve the political history of Austria.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

This museum is dedicated to the little known ancient Roman history of Vienna.

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

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.

One of the best collections of wax anatomical models in the world.

Apartment complexes built into huge repurposed natural gas tanks.

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

Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

Legends surround an ancient tree trunk riddled with nails for good luck.

This cubist Vienna church building looks like some sort of alien stonehenge.

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

Macabre museum devoted to historical Viennese murders.

Museum dedicated to the terror regimes of Hungary.

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

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

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

How did an Australian statue of the Bard of Avon end up in the Hungarian capital?