Danube-Auen National Park on both land and water, and other invertebrates, the total number of species in Donau-Auen National Park is estimated to be at least 5,000. Danube-Auen National Park Donau-Auen National Park () covers 93 square kilometres in Vienna and Lower Austria and is one of the largest remaining floodplains of the Danube in Middle Europe. The German word Aue (variant Au) means "river island, wetland, floodplain, riparian woodland", i.e. a cultivated landscape in a riparian zone. The words Aue and Au occur in a large number of German place names—including Donau, the German word for the Danube River—and refer to forests,
Steamboats on the Danube and a passenger leisure cruising business and these two private companies still exist. Patrick Feore. Between the Woods and Water. 1986. Steamboats on the Danube The Danube Steamboat Shipping Company, Donaudampfschiffahrtsgesellschaft was a shipping company founded in 1829 by the Austrian government for transporting passengers and cargo on the River Danube. In 1880, the DDSG was the world's largest river shipping company with more than 200 steamboat ships and about 1000 cargo tubs. Steamboats on the Danube were, by the end of the 19th century, dominated by the Austrian-based DDSG. A new organisation was formed in 1896, based in the