COUNTYMaridon Museum, 322 N. McKean St., is open from 11 a.m. to 4 p.m. Wednesdays through Saturdays, except holidays. Guided tours are available with advanced notice for no extra charge. The museum hosts Dharma meditation the second and third Thursdays of the month, and a book club the last Thursday of each month. A Japanese film series is upcoming. Call 724-282-0123 or visit www.maridon.org.Harmony Museum, 218 Mercer St., Harmony, tours 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, offered from 1 to 4 p.m. daily, except when the museum is closed Mondays and major holidays. Museum admission is $7 for adults, $6 for senior citizens age 60 and older, and $3 for youths ages 6 to 17. Call 724-452-7341.

PITTSBURGHChildren’s Museum, 10 Children’s Way, Allegheny Square, has opened the baseball-themed exhibit “Big League Fun,” running through May 10, as well as the 13th annual “Tough Art” exhibition. The Children’s Museum is open 10 a.m. to 5 p.m. daily, except holidays. Admission varies by the day, but ranges from $13 to $16. Children younger than 2 are admitted free. Call 412-322-5058 or visit www.pittsburghkids.org.Heinz History Center, 1212 Smallman St., in the Strip District, presents the largest collection of artifacts from “Mister Rogers’ Neighborhood” on public view. History center hours are from 10 a.m. to 5 p.m. daily. Museum admission is $18 for adults, $15 for senior citizens age 62 and older, $9 for students and children ages 6 to 17, and free for children ages 5 and younger. The History Center’s museum system includes the Sports Museum; the Fort Pitt Museum in historic Point State Park; and Meadowcroft Rockshelter and Historic Village, a National Historic Landmark located in Avella in Washington County. Call 412-454-6000 or visit www.heinzhistorycenter.org.