Danube conservation and touristic development of the Danube region. In medieval Regensburg, with its maintained old town, stone bridge and cathedral, the Route of Emperors and Kings begins. It continues to Engelhartszell, with the only Trappist monastery in Austria. Further highlight-stops along the Danube include the "Schlögener Schlinge", the city of Linz, which was European Capital of Culture in 2009 with its contemporary art richness, the Melk Abbey, the university city of Krems and the cosmopolitan city of Vienna. Before the Route of Emperors and Kings ends, you pass Bratislava and Budapest, the latter which was seen as the twin town
Gießenbach (Danube) near the isle Wörth into the Danube at about metres above the Adriatic. The Gießenbach touches or crosses the following communities: St. Georgen am Walde, Pabneukirchen, Dimbach, Waldhausen im Strudengau, Bad Kreuzen, Grein und St. Nikola an der Donau. Left tributaries of the Gießenbach and Vogelsammühlbach, resp., are the Haselböckbach, the Gassnerbach and the Blümelbach with te Leimlehnerbach, right tributares are the Sagmüllerbach with the Riedersdorfmühlbach. The Gießenbach flows through natural wet meadows and several gorges, with the Stillensteinklamm is the best known of them. A special noteworthiness of the Gießenbach is the endangered freshwater pearl mussel. Eighteen mills were