A Walking Tour of McKean Street is planned for 1:30 to 3 p.m. Sunday. Cost is $10 for adults and $5 for children 12 and younger. To reserve a spot, call 724-256-5769 or e-mail info@butlerdowntown.org.

Harmony Museum on Mercer Street in Harmony, offers its final German dinner of the year Saturday in Stewart Hall. Cost is $17, with proceeds benefiting museum operations. Prepaid reservations, required for sittings at 4:30 or 6:30 p.m., can be arranged by calling 724-452-7341.

Children’s Museum, 10 Children’s Way, Allegheny Square, will show “Tough Art” Saturday through Jan. 13. 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.Phipps Conservatory and Botanical Gardens at One Schenley Park presents the summer flower show “Fountains of Youth” through Sept. 30. Phipps is open daily from 9:30 a.m. to 5 p.m. and until 10 p.m. Fridays. Admission is $12 for adults; $11 for senior citizens and students with ID; $9 for children ages 2 to 18; and free for children younger than 2. Call 412-622-6914 or visit phipps.conservatory.org.Heinz History Center, 1212 Smallman St., hosts forensic pathologist Dr. Cyril Wecht who will examine one of Pittsburgh’s greatest unsolved mysteries — the cause of the Allegheny Arsenal explosion — on its 150th anniversary as part of a special event from 1 to 3 p.m. Saturday. Center admission is $10 for adults, $9 for seniors, $5 for students and children ages 6 to 17, and free for children 5 and younger. The center is open daily from 10 a.m. to 5 p.m. Call 412-454-6000 or visit www.heinzhistorycenter.org.Carnegie Science Center, North Side, hosts The Mavens playing an original form of honky-tonk, western-swing and country rock music from 2 to 3 p.m. Saturday as part of center’s acoustic performance series running during the traveling exhibit: “Guitar: The Instrument That Rocked The World.” The performance is free with regular admission, which is $17.95 for adults and $11.95 for children ages 3 to 12. Most activities are included in the admission price, but some, like Omnimax films, cost extra. The center is open 10 a.m. to 7 p.m. Saturdays and 10 a.m. to 5 p.m. Sundays through Fridays. Call 412-237-3400.ToonSeum, Pittsburgh’s Museum of Cartoon Art at 945 Liberty Ave., presents “Pearls Before Swine: The Art of Stephan Pastis” through Sept. 30. Admission is $4 for adults and free for children 12 and younger. Hours are 10 a.m. to 3 p.m. Wednesdays and Thursdays, 10 a.m. to 5 p.m. Fridays and Saturdays and 11 a.m. to 4 p.m. Sundays. Call 412-232-0199 or visit www.toonseum.org.