 Other notable installations include at Museum Folkwang, Essen, in 1999, and Disjecta, Portland, in 2012, as well as "Judgment Day," an installation of digital prints for the exhibition, Personal Structures, at the 54th Venice Biennale in 2011.Recently, he exhibited "The Schirn Ring", a large, multi-part installation at Schirn Kunsthalle, Frankfurt, Germany.Halley has created several permanent works in public spaces.