Maridon Museum, 322 N. McKean St., will host a mah-jongg beginners class from 12:30 to 3 p.m. Friday. Mah jongg is a game played with tiles. The Maridon is open 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 younger than 8. Guided tours are available with advance notice for no extra charge. Call 724-282-0123 or visit maridon.org.

Saxonburg Area Artists Cooperative, 215 W. Main St. rear, Saxonburg, is taking part in the Saxonburg Festival of the Arts Saturday and Sunday by hosting demonstrations. The cooperative is presenting members' artwork. Colored pencil drawings by Mary Hoffman will be displayed beginning Oct. 4. Gallery hours are noon to 8 p.m. Fridays and 10 a.m. to 8 p.m. Saturdays. Gallery admission is free. Call 412-260-5779.

Red Brick Gallery, 17 Main St., Foxburg, presents watercolors by botanical painter Donna Edmonds of Parker in the Upstairs Gallery through Sept. 14. Gallery hours are 4 to 8 p.m. Fridays, 11 a.m. to 8 p.m. Saturdays, and 11 a.m. to 4 p.m. Sundays. Call 724-659-0003.

Silver Eye Center for Photography, 1015 E. Carson St., hosts the exhibit “Charlotte Dumas: Anima” featuring portraits of the majestic burial horses of Arlington National Cemetery, through Oct. 4. Gallery hours are noon to 6 p.m. Tuesdays through Saturdays. Admission is free. Admission is free. Visit www.silvereye.org.Society for Contemporary Craft, 2100 Smallman St., is showing “Transformation 9: Contemporary Works in Ceramics” through Nov. 1. Hours are 10 a.m. to 5 p.m. Mondays through Saturdays. Admission is free. Call 412-261-7003.