There is so much spectacular sculpture in the metropolitan area that enthusiasts have developed an entire website devoted to it: sculpturesitesgr.org. From the website: "The Greater Grand Rapids area has quietly built an impressive collection of modern and contemporary sculpture over the course of the last 30 years. World-renowned masters from Auguste Rodin to Alexander Calder, Mark di Suvero to Maya Lin, Clement Meadmore to Henry Moore have become a part of the cultural patrimony in a variety of public sites and collections." Go there for an annotated catalogue, then grab a camera and see how many hidden treasures you can spot on a sunny Saturday afternoon.
See also: Calder, Gardens