When: First Sunday of every month, 2-3 p.m.; Third Sunday of every month, 2-3 p.m. Continues through Oct. 31, free. Laumeier Sculpture Park, 12580 Rott Rd, Sunset Hills, 314-821-1209, http://www.laumeier.org.
Tours begin at the museum shop; wear comfortable shoes for your walking, and learning, experience.