I found three more photographs of “Tower…”
Tower is on permanent load from Frabel Art Foundation. In the late 1970s, glass sculptor Hans Godo Frabel created a small series of abstract sculptures of spheres connected to rods, forming unique clear shapes that render a beautiful play with light. This piece, entitled Tower, is a larger version of Frabel’s 1979 Tower of Babel.
References: text is from the park placard with minor edits.