Parallel Lines, Vernon Fisher’s site-specific installation on the second and third levels of the Hirshhorn Museum, comprised eight 12-by-13-foot, latex-and-oilstick wall drawings. Unlike many installations which would be more accurately termed in situ than site-specific, Fisher’s installation was carefully linked to its site. The Hirshhorn is a disc-shaped structure supported on four large piers; its only windows line circular hallway galleries that face an inner court. The drawings’ location in these narrow circular spaces exploited the museum’s shape, forcing the viewer to see them both