The Old Stone House has public tours Saturdays from 10 a.m. to 5 p.m. and Sundays from noon to 5 p.m. through Oct. 26. The Old Stone House at the intersection of Routes 8, 173 and 528 is operated by Slippery Rock University. Call 724-738-2409.

Harmony Museum, 218 Mercer St., Harmony, offers guided 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 or visit www.harmonymuseum.org.

Meadowcroft Rockshelter and Historic Village, 401 Meadowcroft Road, Avella, Washington County, is open for the season. An atlatl competition will be held June 21. In May, Meadowcroft is open noon to 5 p.m. Saturdays and 1 to 5 p.m. Sundays.

National Aviary, 700 Arch St., will host a Bald Eagle Tour at 9 a.m. Saturday; cost is $35 for nonmembers. The tour will show both the bald eagles inside the aviary and the ones at the Hays nest site. An Eagles of the World Weekend is planned from 11 a.m. to 3 p.m. Saturday and Sunday. Call 412-323-7235 or visit www.aviary.org.ToonSeum, Pittsburgh’s Museum of Cartoon Art, 945 Liberty Ave., hosts a read along party from 4 to 7 p.m. Saturday. The exhibit about the children’s book series “Little Golden Books” continues through June 30. Hours are 10:30 a.m. to 3:30 p.m. Mondays, Wednesdays and Thursdays, 10:30 a.m. to 7 p.m. Fridays, 10:30 a.m. to 5 p.m. Saturdays and 11 a.m. to 5 p.m. Sundays; closed Tuesdays. Admission is $6 for those over age 13 and $3 for children ages 6 to 12. Senior citizens, college students, veterans and active military pay $5. Call 412-232-0199 or visit toonseum.org.Children’s Museum, 10 Children’s Way, Allegheny Square, hosts “XOXO: An Exhibit About Love and Forgiveness” through Aug. 31. Hours are 10 a.m. to 5 p.m. daily. Admission is $13 for adults and $12 for senior citizens and children ages 2 to 18. Call 412-322-5058 or visit www.pittsburghkids.org.Carnegie Museum of Natural History, 4400 Forbes Ave., Oakland, presents “Race: Are We So Different?” through Oct. 27. Hours are 10 a.m. to 5 p.m. Mondays and Wednesdays through Saturdays and noon to 5 p.m. Sundays with extended hours until 8 p.m. Thursdays. Closed Tuesdays. Admission is $17.95 for adults, $14.95 for senior citizens, and $11.95 for students and children ages 3 to 18. Admission after 4 p.m. on Thursdays is discounted. Call 412-622-3131 or visit www.carnegiemnh.org.