The Grein – a town in Upper Austria, is a member of the district Perg. The Grein is located 55 km East of Linz in a small extension of the valley of the Danube and is the most easterly town in Upper Austria.

The city flourished in the middle ages, when the Babenberg due to its proximity to the Danube. Here lived many pilots who carried out merchant vessels along the narrow and winding rapids of the river. In 1476 in the city had a strong fire, and in 1490 he was not yet fully restored. After the war with king Matthew Corvinus, the city was again damaged, lost fortress. In 1592-1600, as there was the Counter-reformation, resulting in many Lutherans left the city. In 1600, at the town hall square over the construction of the octagonal fountain Caspar Alexandrina Trento. The next major fire happened in Grein in 1642. In addition, the second frequent scourge of the city were flooding. In the last decade has invested a lot of money for flood control.

Since 1918 the Grein treated Upper Austria, however, already on March 13, 1938, went to be with the "Upper Danube" and remained in German possession until the end of the Second world war. From 9 may 1945 to 1955 the Grein was in the area of Russian occupation.

The main attractions of Grein include castle of Greenburg, built in 1490. Is considered the oldest residential castle in Austria. Currently the castle houses the Maritime Museum. Undoubtedly, the interest is the Rococo Theatre, which is located in the old town hall Grein.