The size of the complex is so large that three of the world's top developers submit different parts of the design plan. Four venues and city parks make up the wonder of both dynamic sports competitions and quiet music feasts. The opera house named after Margot and Bill Winspeare is the performance venue of the Dallas Opera Company and the Texas Ballet Theatre; the theatre named after Di and Charles Willie is the location of the Dallas Black Dance Theatre and Anita N Martinez Folk Ballet; and the parks, squares and even basketball venues. It has a wide range of functions.