 Since 1960 it has served as the Events Centre of the Stiftung Stapferhaus Lenzburg (Lenzburg Stapfer House Foundation), offering a variety of cultural activities such as exhibitions on current events.The "Museum Aargau" (Aargau Museum), until 2007 the "Historisches Museum Aargau" (Aargau Historical Museum), includes in addition to Lenzburg Castle Hallwyl Castle, and since 2009 Habsburg Castle and Königsfelden Abbey.It also has a collection of approximately 40,000 historic artefacts, assembled from various sources