Saxonburg Area Artists Cooperative, 215 Main St. rear, Saxonburg, presents “Artists in Action,” sculpture, watercolor and glassblowing demonstrations, during the Saxonburg Festival of the Arts, Saturday and Sunday. Admission is free. Regular gallery hours are noon to 8 p.m. Fridays and 10 a.m. to 8 p.m. Saturdays. Call 412-260-5779.

Associated Artists of Butler County plans the annual Nature and Wildlife Show opening for Sept. 20 at The Art Center, 344 S. Main St. Gallery hours are noon to 6 p.m. Wednesdays through Fridays and noon to 4 p.m. Saturdays. Admission is free. Call 724-283-6922 or visit www.aabcArtCenter.com.

Maridon Museum, 322 N. McKean St., is displaying “Entertainers,” a new exhibit, in the side gallery and a new temporary exhibit “Jade: Stone of Heaven” in the multipurpose room. Hours are 11 a.m. to 4 p.m. Wednesdays through Saturdays. Admission is $4 for adults, $3 for senior citizens and students, and free for children under 8. Guided tours are available with advance notice for no extra charge. Call 724-282-0123 or visit www.maridon.org.

Red Brick Gallery, 17 Main St., Foxburg, is exhibiting photography by Ray Rossi, 2-D and 3-D artworks by Kirk Poffenberger, and animal drawings by Mark Cole through Oct. 13. There will be a reception from 3 to 6 p.m. Sunday. Call 724-659-0003. Regular gallery hours are 4 to 8 p.m. Fridays, noon to 8 p.m. Saturdays and 1 to 6 p.m. Sundays.

Filmmakers Galleries, 477 Melwood Ave., presents the work of five advanced photography students from Pittsburgh Filmmakers. The show, “Pigment and Silver” runs through Sept. 13. Admission is free. Hours are noon to 7 p.m. Mondays through Thursdays and noon to 6 p.m. Fridays.Carnegie Museum of Art, 4400 Forbes Ave., hosts The Playground Project, featuring playgrounds from around the world. Hours are 10 a.m. to 5 p.m. Tuesdays through Saturdays, with additional hours until 8 p.m. Thursdays, and noon to 5 p.m. Sundays. Admission is $17.95 for adults, $14.95 for senior citizens, $11.95 for students and children ages 3 to 18, and free for children younger than 3. Admission after 4 p.m. Thursdays is discounted. Call 412-622-3131 or visit www.cmoa.org.