The Associated Artists of Butler County hosts the Art Faculty Exhibit through Friday at The Art Center, 344 S. Main St. Faculty members from local colleges and high schools display a variety of creative entries. Gallery hours are noon to 6 p.m. Wednesdays through Fridays and noon to 4 p.m. Saturdays. Admission is free. A second Art Faculty Exhibit opening and awards ceremony, free to the public and sponsored by the Cranberry Township Community Chest, will be held Oct. 12 at the Cranberry Township Municipal Center, 2525 Rochester Road. At this event, the winners of $1,000 in cash awards will be announced. The exhibit will then remain on display at the municipal center through Nov. 9. Call 724-283-6922 or visit www.aabcArtCenter.com.

Maridon Museum, 322 N. McKean St., will host its annual “Treasure or Trinket?” event from 10 a.m. to 3 p.m. Oct. 13. Qualified antique dealers will be identifying what makes an item collectible and valuable. Verbal appraisals will be given for a $5 per object donation, limited to 10 items altogether. The museum 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 www.maridon.org.

Bottlebrush: A Gallery for the Arts, 539 Main St., Harmony, hosts artist and musician David Childers along with singer/songwriter Bruce Hoffman, performing at 7 p.m. Friday. Admission is $10. Snacks will be served. Reservations are required. Call 724-452-0539.

The 10th annual Nature Art Show, sponsored by the McKeever Environmental Learning Center, 55 McKeever Lane, Sandy Lake, offers regional nature artists the chance to display and sell their works Sept. 28 to 30. The free show will be from 6 to 9 p.m. Sept. 28, 10 a.m. to 6 p.m. Sept. 29 and noon to 4 p.m. Sept. 30. Visit www.mckeever.org.Red Brick Gallery, 17 Main St., Foxburg, is featuring “Botanicals and Beyond,” a mixed media exhibit, through Oct. 7. Hours are 4 to 8 p.m. Fridays, noon to 8 p.m. Saturdays, and 1 to 6 p.m. Sundays. E-mail edmonds@embarqmail.com.Hoyt Institute of Fine Arts, 124 E. Leasure Ave., New Castle, presents the work of three contemporary artists from the Mid-Atlantic region through Oct. 5. Admission is free. 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.

Silver Eye Center for Photography, 1015 E. Carson St., hosts “No Job No Home No Peace No Rest: An Installation by Will Steacy” through Dec. 15. Hours are noon to 6 p.m. Tuesdays through Saturdays. Admission is free. Call 412-431-1810 or visit www.silvereye.org.Carnegie Museum of Art, 4400 Forbes Ave., presents “Natural History,” an exhibition that explores the myriad ways contemporary artists respond to nature, through Oct. 14. 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 age 65 and older, $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.Society for Contemporary Craft, 2100 Smallman St., hosts “Humor in Craft” through Oct. 27. Hours are 10 a.m. to 5 p.m. Mondays through Saturdays. Admission is free. Call 412-261-7003. A glass exhibit, celebrating the 50th anniversary of the development of studio art glass in America, concludes Sunday at the satellite gallery in the lobby of the Steel Plaza T-Station.