Associated Artists of Butler County continues the holiday show and sale through Dec. 31 at The Art Center, 344 S. Main St. Gallery hours are noon to 6 p.m. Wednesdays, Thursdays and Fridays and noon to 4 p.m. Saturdays. Admission is free. Call 724-283-6922.

Maridon Museum, 322 N. McKean St., 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. Tours are available with advance notice. Call 724-282-0123 or visit www.maridon.org.

Saxonburg Area Artists Cooperative, 215 Main St. rear in Saxonburg, is open for the rest of December from 6 to 9 p.m. Tuesdays, 1 to 9 p.m. Fridays and 10 a.m. to 8 p.m. Saturdays, closing at 4 p.m. Dec. 24. Winter hours, starting Jan. 1, will be 1 to 9 p.m. Fridays and 10 a.m. to 8 p.m. Saturdays. Call 412-260-5779, 724-352-1759 or 412-849-4648.

<B>Allegheny RiverStone Center for the Arts</B>, in cooperation with volunteers and artisans, has opened the Red Brick Gallery and Shop on Main Street in Foxburg. Its premier art show runs through Dec. 23. The Red Brick is open from 3 to 6 p.m. Fridays, noon to 6 p.m. Saturdays and 1 to 5 p.m. Sundays. Contact Donna Edmonds at edmonds@embarqmail. com.<B>Hoyt Institute of Fine Arts</B>, 124 E. Leasure Ave., New Castle, presents The Art Treasures of America in the Main Galleries through Dec. 23. The exhibit consists of a selection of photogravures dating back to the 1880s. Admission is free and hours are 11 a.m. to 8 p.m. Tuesdays and Thursdays and 11 a.m. to 4 p.m. Wednesdays, Fridays and Saturdays. Call 724-652-2882 or visit www.hoytartcenter.

<B>Carnegie Museum of Art</B>, 4400 Forbes Ave., presents six 20-foot pine trees decorated with different themes through Jan. 12. “Teenie Harris, Photographer: An American Story,” featuring nearly a thousand of Harris’ images, continues through April 7. Also continuing is “Palladio and His Legacy: A Transatlantic Journey,” featuring drawings by one of the most influential architects in the Western world. Museum 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 $15 for adults, $12 for senior citizens, $11 for students with ID and children age 3 to 18, and free for children younger than 3. Call 412-622-3131 or visit www.cmoa.org.