The Renzo Piano Building Workshop designed this glass balustrade, in the Nasher Sculpture Garden in Dallas, a year after the Ando example. It's light as a feather. Piano dispenses with the top rail altogether and slightly separates the glass sheets, which have beveled edges and rounded corners. The handrail floats, but instead of stainless steel, it's wood. The overall effect is to emphasize the different parts—glass sheets, metal brackets, wood rail—and the manner of their assembly. Although the entire balustrade is elegant, the effect is not minimalist or purist; each part is allowed to do its own job. The wood rail also feels good to the touch.