ACTON -- The Discovery Museums, 177 Main St., plan many activities during the upcoming April School Vacation Week, including an Earth Day Celebration on Tuesday, April 22, 11 a.m.-3 p.m., and kite-making fun on Thursday, April 24, 11 a.m.-2 p.m. Both museums will be open Monday, April 21, through Friday, April 25, from 9 a.m.-4:30 p.m.
Visit discoverymuseums.org for details.
LOWELL -- Celebrate National Park Week at Lowell National Historical Park, April 19-27.
Beginning Saturday and Sunday, free admission will be offered to the Boott Cotton Mills Museum, where kids can experience the working weaveroom and discover the stories of the people who came from all over the world to build this city and work in its factories.
During the 30th Anniversary of Trolleys, visitors can take free trolley rides across town. At 11 a.m., an extended ride leaves from the Visitor Center, and a free trolley guided tour leaves the Boott Museum at 2:30 p.m.
April Play-cation, a series of children's events that provide learning experience and fun through crafts and activities, brings free family fun to families April 21-25. The complete schedule of events is available at lowellkidsweek.org/april. Some programs require pre-registration.
On Saturday, April 26, from 1 to 5 p.m., the LoWellness Festival is being held the Boott Cotton Mills. Enjoy a performance stage, food and gardening demos, outdoor games and activities, and get free health screenings. Earn a junior ranger badge at the National Park table as part of National Junior Ranger Day. Visit bit.ly/Lowellness for information.
For information, visit nps.gov/lowe or call 978 -970-5000. The Visitor Center is located at 246 Market St., and the Boott Cotton Mills Museum is at 110 John St. Free parking available at the Visitor Center.
STURBRIDGE -- Old Sturbridge Village offers visitors plenty of springtime fun during its Patriots' Day celebration on Monday, April 21, and School Vacation Week activities April 19-27.
On Patriots' Day, OSV will celebrate with a muster of the militia, fife and drum performances and more. Throughout School Vacation Week, visitors can explore the Village during a time of seasonal change, including seeing the baby lambs and calves.
Featured performances, offered on select dates throughout the week, include a special 19th-century magic show by Bob Olson, and a portrayal of Laura Ingalls Wilder by Historian and Historical Interpreter Melanie Stringer.
Old Sturbridge Village is located just off the Massachusetts Turnpike and Routes I-84 and 20. Admission is $24; seniors $22; children 3-17: $8; children 2 and under: free, and includes free parking and a free second-day visit within 10 days. Visit osv.org or call 800-SEE-1830.
CONCORD -- A Community Celebration of the Earth will take place during Musketaquid events on Saturday, April 26, beginning with a river ceremony, singing, drumming and launching of Earth Floats at the water's edge at 10 a.m. on the Lowell Road bridge and boat ramp, followed by the Earth Day Parade at 10:45 from the bridge to The Umbrella Center at 40 Stow St.
An Arts and Environment Festival will be held from noon to 2 p.m., with music, local food, kids' activities and table exhibitors on the front lawn of The Umbrella.
The Earth Month Exhibit will be open all day showing "Life on the Edge," a non-juried, multi-media exhibit running through May 5. A reception will take place on Sunday, April 20, 5-8 p.m.