Berlin Cathedral (Berliner Dom), completed in 1905, is Berlin’s largest and most important Protestant church as well as the sepulchre of the Prussian Hohenzollern dynasty. This outstanding high-renaissance baroque monument has linked the Hohenzollerns to German Protestantism for centuries and undergone renewed phases of architectural renovation since the Middle Ages. First built in 1465 as a parish church on the Spree River it was only finally completed in 1905 under the last German Kaiser -Wilhelm II. Damaged during the Second World War it remained closed during the GDR years and reopened after restoration in 1993. Berlin Cathedral contains the tombs of members of the House of Hohenzollern – Known as the Hohenzollern family tomb, over ninety sarcophagi and tombs are on display including those of the Prussian Kings – Friedrich I and Sophie Charlotte, by Andreas Schlüter, impressively cast in gold-plated tin and lead. Other important works of art are the baptismal font by Christian Daniel Rauch and the Petrus mosaic by Guido Reni. The Dome’s organ with over 7000 pipes is a masterpiece and one of the largest in Germany. A visit to the Dome requires climbing 270 steps but the viewing gallery is worth it for great views of Mitte. The 114m-high Dome is sided by four towers and the interior is rich with New Testament and Reformation period elements.