Tod Williams Billie Tsien Architects (TWBTA) built a cantilevered rectangular box that hovers over a courtyard. The new site is known as the Photo 2 of 3 in Philadelphia's "Gallery in a Garden"

Philadelphia's "Gallery in a Garden"

2 of 3

Tod Williams Billie Tsien Architects (TWBTA) built a cantilevered rectangular box that hovers over a courtyard. The new site is known as the "Gallery in a Garden."