iding behind a small doorway in the aptly named Infinite Corridor as it passes through the Eastman Lab building, Sol LeWitt’s “Bars of Colors Within Squares” art installation is one of MIT’s best-kept secrets. Well worth the adventure of searching for the atrium sandwiched between the new Green Center for Physics and two other buildings in Killian Court, the vibrant geometric figures adorning the floor show LeWitt’s affinity for conceptual art—especially when you climb up the stairs and view them from above. With each flight up, the bars of colors within squares slowly morph into three-dimensional spaces with depth, which change as you vary angle of view. Venture to the foyers of the third and fourth floors to discover more artwork on the walls. Araki