Video walkthrough of Richard Serra’s sculptures Torqued Torus Inversion (2006) and Sequence (2006), on display at MoMA as part of the exhibition Richard Serra Sculpture: Forty Years. The exhibition is on view June 3-September 10, 2007. For more information about the exhibition, please visit www.moma.org/serra.   Audio courtesy of Acoustiguide Video production and editing by CK Studios, Inc. © 2007 The Museum of Modern Art, New York