Thomas Struth In a masterfully resonant gesture, two large-format photographs by the notable German photographer Thomas Struth have replaced the collection of old-master drawings in the Pulitzer Foundation's lower gallery. The images, Pantheon, Rome and The Restorers at San Lorenzo Maggiore, Naples, immediately predate his seminally elegant "Museum" series (which depicted people viewing canonical works of art in the world's canonical museums), but share that series' concern with the phenomenon of viewership and space. One photograph shows a cluster of minute-seeming tourists gaping skyward at the enormity of the ancient Roman sacred space; the other captures a small group of employees in the museum's rear quarters, gazing directly at the camera while rows of historical paintings lean almost casually against a wall behind them. As a pair, the photographs perform a rich exercise in perception and scale, in which you, the viewer, contemplate other viewers' contemplations of represented space, while simultaneously enacting the same action. Furthering this effect, when ascending the stairs from the lower gallery, the severe modernity of the museum suddenly resonates with Struth's ornate grand halls and coffered rotundas — making the contemporary world, for a miraculous moment, the logical conclusion of history. Through October 3 at the Pulitzer Foundation for the Arts, 3716 Washington Boulevard; 314-754-1850 or www.pulitzerarts.org. Hours: noon-5 p.m. Wed., 10 a.m.-4 p.m. Sat.