The collection expands every year. There are 239 sculptures in the park. Visitors can see the works of such major artists as Auguste Rodin, Henry Moore, Rik Wouters, Isa Genzken, Chris Burden, Andrea Zittel, Ai Weiwei, Barbara Hepworth, Bruce Nauman, Germaine Richier, Erwin Wurm, Richard Deacon and many others under stately trees, lining wide walking trails and on inviting lawns.