This summer, a walk along the oval paths in Madison Square Park takes on an extra dimension in mood and light. Overhead, reflective golden canopies affixed on scaffolding swirl in circular leafy shapes, mirroring the leaves of nearby trees. The artwork is by Teresita Fernández (b. 1968), a 2005 MacArthur Fellow and Brooklyn-based artist known for landscape sculpture. The work is said to be the largest installation in the history of the park, a big claim as the program Mad. Sq. Art has hosted many ambitious exhibitions by well-known artists, especially in recent years. Each overhead piece is constructed as parallel raggedy cutouts, like ice cream sandwiches, and layered. The sunshine spills down through the openings and dapples the walkways and passersby. In turn, the patterned light reflects back up on the mirrored canopies, creating endless and varying conversations among the trees, ourselves, the sun, and the sidewalk. While the dappled sunshine is cool and welcoming, the