A visit to Carnuntum makes the Ancient Roman period come to life: Carnuntum, the imperial city, is born again. For the first time anywhere in the world, a part of an Ancient Roman city was reconstructed at the open-air museum in Petronell. Baroque splendor and zest for life are in the air at Schloss Hof, a former summer residence of Empress Maria Theresia. Rohrau Castle contains one of the world’s most significant private collections of art: the Harrach family’s painting collection.