In a high position dominating the surrounding landscape, the Walhalla rises above the Danube near Regensburg. This classicistic building in the form of a temple surrounded by columns was built here by order of the Bavarian King Ludwig I. (reigned 1825-1848) one of the most important German national monuments of the 19th century. The building was erected by Ludwig I's favourite architect, Leo von Klenze (1784-1864), one of the most important classicist architects of the 19th century.