The Sandler Hudson Gallery is testing the limits of rooftop design with Chakaia Booker's installation, SCULPTURES, on view Tues., AUG. 28 and through Sept. 8. Booker's fusion of recycled rubber tires and everyday materials, such as wood or steel, creates intricate, Mad Max-esque sculptures. Inside the gallery below is Lisa Beane's S'REGGIN. Beane's combination of vibrant colors, cartoons, drawings, and words provokes a feeling of childlike innocence. Free. Tues.-Fri., 10 a.m.-5 p.m.; Sat., noon-5 p.m. 1009-A Marietta St. 404-817-3300. www.sandlerhudson.com.