The border between Austria and Slovakia is remarkable for bringing two national capitals, Vienna and Bratislava, closer than almost any others in the world. Your journey between them is a short trip of only about 60 kilometers, defined by the steady flow of the Danube River and a history that has swung from imperial unity under the Habsburgs to decades of Cold War division. With both nations in the Schengen Area, the handful of crossings are completely open and free of controls. The most-traveled route is the A6 motorway, but you can also cross on smaller local roads. For a more scenic journey, you can take a high-speed catamaran along the Danube, which connects the two city centers directly.
For decades, this was a heavily guarded section of the Iron Curtain, a stark line of barbed wire and watchtowers. The most powerful symbol of its transformation is the “Freedom Bridge” (Most Slobody), a modern cycling and pedestrian bridge built on the former patrol path. Crossing it today, you can see remnants of old bunkers in the woods, a poignant reminder of how a once-impenetrable barrier has become a symbol of European unity and easy, everyday movement between two capital cities.