Europe’s two closest capital cities are both beautiful and just 31 miles apart.

Vienna, the capital of Austria, and Bratislava, the capital of Slovakia are a stone’s throw from one another.

Highlights in the Austrian capital include Schönbrunn Palace, the former summer residence of the Hapsburg rulers; the gothic St. Stephen’s Cathedral; and the Hofburg, which was the Hamsburg’s principal imperial palace and is now home to the Spanish Riding School.

Other attractions are the imposing St…