Glass balustrades are as ubiquitous today as pipe railings were in the '20s. This one, in the New Modern Art Museum of Fort Worth, was designed by Tadao Ando in 2003. The basic technology is the same as Pei's. But in this design, theatricality plays an important role, a dramatic moment in Ando's otherwise spare aesthetic. The handrail floats, while the sheet of glass appears to have been pushed into the stair and the granite floor, like a knife into butter. Ando, known for his use of polished concrete, actually manages to make this glass balustrade look massive.