Old Stone House will present a six-session Early American Hearth Cooking class beginning Saturday. Tuition is $150, including all materials and supplies, and registration is necessary. Call 724-738-4964 or send e-mail to oldstonehouse@sru.edu. The Old Stone House is at the intersection of Routes 8, 173 and 528.

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.

Carnegie Science Center, North Side, from 11 a.m. to 5 p.m. Saturday, will host Back to the Moon Day, featuring members of Pennsylvania’s two teams who are working on robotic spacecraft designed to travel to the moon. Center hours are 10 a.m. to 7 p.m. Saturdays and 10 a.m. to 5 p.m. Sundays through Fridays. Admission is $17.95 for adults and $11.95 for children ages 3 to 12. Call 412-237-3400.Heinz History Center, 1212 Smallman St., has added features to the “From Slavery to Freedom” exhibition. Special programs are planned in February. “Poptastic!” focusing on Pittsburgh artist Burton Morris and more than 100 original works of art continues through Feb. 23. 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., will have opening reception for “Color Me Happy: ’50s Coloring Book Illustrations as Modern Memes” at 7 p.m. Friday. The exhibit continues through March 16. “Wonder Women: On Page and Off” runs through March 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 older than 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.Phipps Conservatory and Botanical Gardens presents the annual orchid and tropical bonsai show through March 9. Programs, free with paid admission, will be held on select Saturdays and Sundays at 1:30 p.m. Additionally, bonsai classes are available. Phipps is open daily from 9:30 a.m. to 5 p.m. and until 10 p.m. Fridays. 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.National Aviary, 700 Arch St., has daily baby penguin meet-and-greets. The “Canary’s Call” exhibit showcases four signature bird species and a number of other birds from around the world. Admission is $13 for adults, $12 for senior citizens, $11 for children ages 2 to 18, and free for children younger than 2. Hours are 10 a.m. to 5 p.m. daily. Call 412-323-7235 or visit www.aviary.org.Children’s Museum, 10 Children’s Way, Allegheny Square, will open “XOXO: An Exhibit About Love and Forgiveness” on Feb. 15. The museum is open 10 a.m. to 5 p.m. daily. Admission is $13 for adults, and $12 for children ages 2 to 18 and senior citizens. Call 412-322-5058 or visit www.pittsburghkids.org.