COUNTYButler County Historical Society at the Senator Walter Lowrie House Museum in March is open from 10 a.m. to 3 p.m. Tuesdays through Thursdays. Call 724-283-8116 or visit www.butlerhistory.com.Harmony Museum, 218 Mercer St., offers tours from 1 to 4 p.m. daily, except when the museum is closed Mondays. Admission is $7 for adults, $6 for senior citizens, and $3 for youths ages 6 to 17. Call 724-452-7341.

PITTSBURGHHeinz History Center, 1212 Smallman St., presents “Toys of the ’50s, ’60s and ’70s.” Admission is $16 for adults, $14 for senior citizens, and $6.50 for children ages 6 to 17. Hours are 10 a.m. to 5 p.m. daily. Visit www.heinzhistorycenter.org.ToonSeum, Pittsburgh’s Museum of Cartoon Art, 945 Liberty Ave., hosts “Alt-Weekly Comics,” a historical retrospective of comics of alternative weekly newspapers, and “Fear of a Black Marker: Cartoons by Keith Knight, Gentleman Cartoonist,” both through April 10. Admission is $8 for those 13 and older and $4 for ages 6 to 12. Visit toonseum.org.National Aviary, 700 Arch St., presents a baby Linnaeus’ two-toed sloth that recently joined the flock and will participate in programs highlighting rain forest species. Admission is $14 for adults and $13 for senior citizens and children ages 2 to 12. Hours are 10 a.m. to 5 p.m. daily. Visit www.aviary.org.Phipps Conservatory and Botanical Gardens, 700 Frank Curto Drive, is open 9:30 a.m. to 5 p.m. daily, and until 10 p.m. Fridays. Admission is $15 for adults, $14 for senior citizens and $11 for children ages 2 to 18. Visit phipps.conservatory.org.Children’s Museum, Allegheny Square, presents the play exhibit/art installation TapeScape 2.0, showing the unexpected use of packing tape, through May 22. Museum hours are 10 a.m. to 5 p.m. daily. Admission is $14 for adults and $13 for children ages 2 to 18 and senior citizens. Visit www.pittsburghkids.org.