 In 1893 the granary extension was demolished and replaced by a reconstructed battlement leading to the upper gatehouse.Today the rear building is Stapfer House, named for Philipp Albert Stapfer, a revolutionary and a minister in the Helvetic Republic.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.