LTL was commissioned by Memorial Sloan-Kettering Cancer Center to design a permanent art installation in the lobby of their new Upper East Side building. The lobby wall is 30'-6" wide, 12'-6" tall and 3'-6" deep. It has a perforated appearance that transitions from regular on the front plane to apparently random on the back plane. The openings are determined by an array of eye-level viewpoints that cluster in programmatic hot spots throughout the lobby, such that the optical geometry of visitors to the Center is used to carve out openings in the wall. The result is a wall that offers shifting alignments and distortions as one moves through the space.