 A 15 @,@ 000 sq ft ( 1 @,@ 400 m2 ) triangular park was created between the extended Greenwich Street and West Broadway by David Childs with Ken Smith and his colleague , Annie <unk> , of Ken Smith Landscape Architect . The park comprises an open central plaza with a fountain and flanking groves of sweetgum trees and boxwood shrubs . At the center of the fountain , sculptor Jeff Koons created Balloon Flower ( Red ) , whose mirror @-@ polished stainless steel represents a twisted balloon in the shape of a flower . 
