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

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

An abandoned cable car station located on the Danube stands like a haunted house above the river.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

The largest fountain in Bratislava.

A massive sculpture of an obscure Celtic coin that has become a symbol in Slovakia.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

A unique hotel for the artistic soul.

A rebuilt Roman city that was once the largest Roman settlement in the region.

The resting place for anonymous victims of the Danube's dark waters.

Apartment complexes built into huge repurposed natural gas tanks.

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

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Op-art architecture designed for happiness.

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

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

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

This outsider art house has gone from clinical creation to astounding artwork.

A secret hotel room can be found inside this clocktower in the oldest city in Austria.

A unique opportunity to stay the night in retrofitted sections of sewer pipe.

Austria’s oldest brewery makes beer with flaming-hot granite.

Shimmering sea-colored mosaics and Jesus statues cover this opulent building.