Last January, Andy Goldsworthy’s colossal stone gateway Grand Rapids Arch was unveiled at Frederik Meijer Gardens & Sculpture Park. In March, the Michigan city announced that Dennis Oppenheim would receive a $200,000 commission to create the spiraling aluminum and Lexan Journey Home for the new Rapid Central Station bus depot. And this past summer, both the city and the gardens hosted the 40-piece outdoor exhibition “Tom Otterness in Grand Rapids,” after previous showings in Manhattan, Indianapolis, and Beverly Hills.