The MetroWest YMCA Family Outdoor Center in Hopkinton (45 East Street) will host a summer camp open house on Saturday, June 25, from 10 a.m.-2 p.m. Attendees can tour the 122-acre campus, meet camp leadership and learn about summer camp offerings at the Y. The Hopkinton Summer Day Camp offers boating on the Ashland Reservoir, a ropes course, archery, multiple sports fields, an indoor climbing wall and an outdoor pool. Camp is for ages 3-16. There also are more than a dozen specialty camps. For more information, visit metrowestymca.org.