Providence Plantation, a center for living history presentations about 18th century frontier life at 300 Textor Hill Road, Evans City, will be the site of demonstrations of colonial trades such as cooking, spinning, woodworking and knot tying from 10 a.m. to 4 p.m. Saturday. Events will include a character interpretation: “Christopher Gist and Archaeology in the Ohio Valley,” plus a question-and-answer session and period music. Admission is $6 for adults or $3 for those younger than 12. Call 724-538-8818.

Harmony Museum on Mercer Street in Harmony offers guided tours that include the 1809 main museum building and wine cellar and a neighboring early 19th century house, both built by the communal Harmony Society, and a Mennonite log house. Tours are offered 1 to 4 p.m. daily except Mondays. Admission is $7 for adults, $6 for senior citizens, and $3 for those ages 6 to 17. Call 724-452-7341.

Old Economy Village in Ambridge is open year-round. Admission is $10 for adults ages 12 to 64, $9 for senior citizens, $6 for children ages 3 to 11, and free for active military personnel. Old Economy is open 10 a.m. to 5 p.m. Tuesdays through Saturdays and noon to 5 p.m. Sundays. Call 724-266-4500.

Phipps Conservatory and Botanical Gardens, 1 Schenley Park, presents its May Market from 9:30 a.m. to 7 p.m. May 10 and 9:30 a.m. to 5 p.m. May 11. May Market admission is free. A Butterfly Forest continues through Sept. 2, and the summer flower show, Glass Roots, runs through Oct. 6. Conservatory hours are 9:30 a.m. to 5 p.m. daily and until 10 p.m. on Fridays. Conservatory admission is $15 for adults, $14 for senior citizens and students, and $11 for children ages 2 to 18. Call 412-622-6914 or visit phipps.conservatory.org.Heinz History Center, 1212 Smallman St., hosts the exhibit “1968: The Year That Rocked America” through May 12. Admission is $15 for adults, $13 for senior citizens, and $6 for students and children ages 6 to 17. Call 412-454-6000 or visit www.heinzhistorycenter.org.ToonSeum, Pittsburgh's Museum of Cartoon Art at 945 Liberty Ave., celebrates Free Comic Book Day on Saturday with free comic books in a wide selection of titles from Smurfs to the Walking Dead. Admission is $1 for children ages 6 to 12 and $5 for adults. Call 412-232-0199.Children's Museum, 10 Children's Way, Allegheny Square, has reopened the Waterplay area. “Move with Art” concludes on Sunday. Hours are 10 a.m. to 5 p.m. daily. Admission is $13 for adults, $12 for children ages 2 to 18 and senior citizens, and free for children younger than 2. Call 412-322-5058 or visit www.pittsburghkids.org.Carnegie Museum of Natural History, 4400 Forbes Ave. in Oakland, has opened Discovery Basecamp, a new gallery of interactive learning featuring real and replica specimens, educational kits, and tools for observation. More than 60 fine art jewelry pieces inspired by nature are on display in “Garden of Light: Works by Paula Crevoshay” through Aug. 11. Museum hours are 10 a.m. to 5 p.m. Tuesdays to Saturdays, with extended hours until 8 p.m. Thursdays, and noon to 5 p.m. Sundays. Admission is $17.95 for adults, $14.95 for senior citizens, and $11.95 for students with ID and children ages 3 to 18. Admission after 4 p.m. on Thursdays is $10 per adult/senior citizen and $5 per student/child. Call 412-622-3131.