Since the mid-1960s, conceptual artist Dan Graham has been investigating how spaces affect human behavior, how art and audiences are connected, and the ways works of art are linked to their physical, economic, and social contexts. Graham's work is often said to exist between the worlds of art and architecture. For the Minneapolis Sculpture Garden he created a large geometric maze with walls that provide both transparent and reflective surfaces. As we interact with the sculpture we both see and are seen, viewing the surrounding environment and our own reflections. The piece conjures up questions about inside and outside, about public and private spaces, and--as the reflective surfaces respond to the motion of clouds and sun--about nature and culture.