Standing on the 300 block of East Superior in downtown Chicago, a lover of modern architecture could cry. Bertrand Goldbergs magnificent vertical clover of concrete, the former home of Prentice Womens Hospital, is nowhere to be found, demolished a few years ago to make way for a dull expansion of the Northwestern medical campus. Kurt Treeby offers something with which to dry those tears and have a chuckle besides: a tissue box cover in the shape of the lost building. Using plastic canvas and acrylic yarn, Treeby has taken a kitschy craft and raised it up high. Disposable, as hes titled his series, pays tribute to Marcel Breuers jagged Whitney, one of SITE Inc.s Best Products showrooms, and William and Tseins American Folk Art Museum, among others. We tend to think of architecture as something permanent but it isnt, even the best of it. The sharpest irony of Treebys project is the ability of the lowliest craft to offer so fitting a memorial to the highest of the arts.