The Hopkinton Center for the Arts’ Fall 2021 Open House & Registration event is Saturday, Sept. 11, from 11 a.m.-3 p.m. The event is free, but registration is recommended. In addition to learning about upcoming fall classes and events, visitors can participate in activities including artwork and visits from Marvel characters Wonder Woman, Iron Man, Spiderman, Captain America and Thor. For more information, visit the HCA website at hopartscenter.org.