Associated Artists of Butler County at The Art Center, 344 S. Main St., will have its Underground Gallery Christmas party Friday, featuring performances by Dot Dot Dot She Loves Me Not, Overdose on Vitamins, Pressin' On, Oceans of Glass, and Ronnie Dobbs. Doors open at 6 p.m. Cover charge is $5. The annual holiday show and sale continues through Dec. 31 in the main gallery. 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 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 advanced notice for no extra charge. Call 724-282-0123 or visit www.maridon.org.

Saxonburg Area Artists Cooperative, 215 Main St., rear, in Saxonburg, hosts its annual members themed exhibit “Governing Bodies” through Dec. 30. Artwork includes jewelry, photographs, pottery, paintings, sculpture and fiber art. Gallery hours are 1 to 9 p.m. Fridays and 10 a.m. to 8 p.m. Saturdays. Admission is free. Call 412-260-5779.

Carnegie Museum of Art, 4400 Forbes Ave., presents work by New York-based contemporary artist Cory Arcangel through Jan. 27. Best known for his modified versions of obsolete video games, Arcangel employs readymade digital technology as his primary medium. “Inventing the Modern World,” which showcases decorative arts and design innovations from World’s Fairs, continues through Feb. 24. 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 with ID and children ages 3 to 18, and free for children younger than 3. Call 412-622-3131 or visit www.cmoa.org.Filmmakers Galleries, 477 Melwood Ave., presents the Marcellus Shale Documentary Project, with work from six photographers, through Jan. 6. Hours are noon to 7 p.m. Mondays through Thursdays and noon to 6 p.m. Fridays. E-mail info@the-msdp.us.Silver Eye Center for Photography, 1015 E. Carson St., concludes “No Job No Home No Peace No Rest: An Installation by Will Steacy” on Saturday. Hours are noon to 6 p.m. Tuesdays through Saturdays. Admission is free. Call 412-431-1810 or visit www.silvereye.org.