Henry Moore and the Challenge of Architecture explores ways in which the artist approached problems of placing sculpture in an architectural context as increasingly his works were finding homes in an urban environment. The Didrichsen Art Museum was designed by Finnish architect Viljo Revell, whose last project was a collaboration with Moore on the controversial siting of Three Way Piece No.2: The Archer 1965 (LH 535) in Nathan Phillips Square, Toronto. The Didrichsen collection includes a cast of Atom Piece (Working Model for Nuclear Energy) 1964-65 (LH 525) and Archer (LH 536) in white marble: two key works in the exhibition.