Linz is a city in Upper Austria, straddling the Danube River midway between Salzburg and Vienna. Baroque buildings, including Old Town Hall (Altes Rathaus) and the old cathedral or Alter Dom, ring Hauptplatz, the old town’s main square. The riverside Lentos Kunstmuseum Linz has a major modern art collection. Across the river, the striking Ars Electronica Center focuses on society, technology and life in the future. ― Google

Melk is an Austrian town on the River Danube, west of Vienna. It’s known for the 11th-century Melk Abbey, a vast monastery built high above the town. Gold statuary adorns its domed Abbey Church, and the huge library houses medieval manuscripts. The Marmorsaal is a baroque hall with a ceiling fresco and red marble walls. South of Melk, gardens surround Renaissance Schallaburg Castle, which hosts cultural exhibitions. ― Google

Dürnstein is a small town on the Danube river in the Krems-Land district, in the Austrian state of Lower Austria. It is one of the most-visited tourist destinations in the Wachau region and also a well-known wine growing area. Wikipedia

Vienna, Austria’s capital, lies in the country’s east on the Danube River. Its artistic and intellectual legacy was shaped by residents including Mozart, Beethoven and Sigmund Freud. The city is also known for its Imperial palaces, including Schönbrunn, the Habsburgs’ summer residence. In the MuseumsQuartier district, historic and contemporary buildings display works by Egon Schiele, Gustav Klimt and other artists. ― Google