Harmony Museum, Mercer Street, Harmony, unveils a Barrel-rifling tool from the shop of a local 19th century gunsmith at its antique firearms show and sale from 9 a.m. to 4 p.m. Aug. 11 in Stewart Hall. Show admission is $5, with proceeds benefiting the museum. The show will have about 30 dealers with displays emphasizing pre-1898 Western Pennsylvania and eastern Ohio guns. Call 724-452-7341 or www.harmonymuseum.org.

Phipps Conservatory and Botanical Gardens at One Schenley Park presents its summer flower show 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. Call 412-622-6914 or visit phipps.conservatory.org.Children's Museum, 10 Children's Way, Allegheny Square, presents “The Wizard of Oz Children's Educational Exhibition” through Sept. 2. 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. Call 412-322-5058.