Since 1937, the numbering has started at the "Schlossbrücke" (Palace Bridge), connecting Unter den Linden with the Lustgarten and Museum Island. The disputed replica of the Alte Kommandantur is No. 1, vis-à-vis the Zeughaus arsenal, the oldest building on Unter den Linden, built between 1695 and 1706, today the seat of the "Deutsches Historisches Museum" (No. 2). Buildings along the street include (from east to west) the Kronprinzenpalais (former palace of the Hohenzollern crown princes, No. 3), the Neue Wache war memorial built in 1817 (No. 4), considered by many to be Karl Friedrich Schinkel’s masterpiece. Furthermore, on Bebelplatz the Berlin State Opera (No. 7), coloquially called "Lindenoper", St. Hedwig's Cathedral and the "Altes Palais" (No. 9), favoured residence of Emperor Wilhelm I; in the north the main building of the Humboldt University (No. 6) and House I of the Berlin State Library (No. 8). On the western end are the Russian Embassy (former Soviet Embassy, No. 63-65) the Hungarian Embassy (No. 76) at the corner of Wilhelmstrasse and finally the Hotel Adlon (No. 77) at the corner of Pariser Platz, which has been completely rebuilt on the site of the prewar hotel. Well-known statues of Alexander and Wilhelm von Humboldt in front of the university as well as of the Prussian generals Scharnhorst and Bülow also adorn the street.