Be sure not to miss the many works that have remained in the city following previous iterations of Skulptur Projekte: Public Toilet Facilities
at the Domplatz (2007), a Hans Peter Feldmann - decorated WC; Bruce Nauman's meditative Square Depression (1997/2007),
welcoming students to the Natural Science Centre; Rosemarie Trockel's Less Savage than Others (2006/07), a row of square bushes running along the
bank of the Aasee; an untitled work by Donald Judd, in which two
large - scale concrete rings set the decline of a hill against the resting water level; Hermann de Vries's Sanctuarium (1997), a walled sanctuary and safe haven for wildlife; and Rachel Whiteread's Untitled (Books)(1997), lining the walls of the LWL - Museum für Kunst und Kultur.