The Associated Artists of Butler County group is showing its 76th annual Nature & Wildlife exhibit through Oct. 8 at The Art Center, 344 S. Main St. Other upcoming events include: "Art of Horror V" opening at 6 p.m. Oct. 15; "Butler County Art & Artists" opening Oct. 22 (admission $35); and the annual holiday show and sale Dec. 3 to 31. Art classes in a variety of media including painting, sculpture and jewelry making are available for $5 an hour. Call 724-283-6922.

Maridon Museum, 322 N. McKean St., displays hundreds of pieces of ancient and contemporary Asian art and Meissen porcelain. Hours are 11 a.m. to 5 p.m. Tuesdays through Saturdays and noon to 5 p.m. Sundays; closed Mondays. Admission is $4 for adults, $3 for senior citizens and students, and free for children younger than age 8; children must be accompanied by an adult. Tours are led by trained docents and are available with advance notice. The museum also has a gift shop specializing in objects relating to China and Japan. Call 724-282-0123.

Saxonburg Area Artists Co-op, 215 Main St., rear, Saxonburg, is the site of "Setting the Table: Contemporary Ceramics Dines In," contemporary ceramics by Western Pennsylvania potters, through Oct. 2. Gallery hours are 6 to 9 p.m. Thursdays, 1 to 9 p.m. Fridays, 10 a.m. to 2:30 p.m. Saturdays and by appointment. Call 412-260-5779 or 412-849-4648.

Bottlebrush Gallery, 539 Main St., Harmony, presents June Kielty's "Expressions in Wax and Dye" through Oct. 10. Gallery hours are 11 a.m. to 7 p.m. Wednesdays, Thursdays and Fridays, 10 a.m. to 5 p.m. Saturdays, and noon to 5 p.m. Sundays. Call 724-452-0539 or visit www.bottlebrushgallery.com.

<B>The eighth annual Nature Art Show</B> will be displayed from 6 to 9 p.m. Friday, 10 a.m. to 6 p.m. Saturday and noon to 4 p.m. Sunday at McKeever Environmental Learning Center, 55 McKeever Lane, Sandy Lake. Julie Harris, a guitarist, will play from 6 to 9 p.m. Friday. Refreshments will be served throughout the weekend. Admission is free. Call 724-376-1000.<B>Blue Heron Gallery</B>, 600 Main St., Volant, is showing "Explorations" by Cynthia Fiorini and "Visions of My Art" by John Catterson through Sept. 26. Gallery hours are 10 a.m. to 5 p.m. Wednesdays through Saturdays and noon to 5 p.m. Sundays. Call 724-652-0752.

<B>Carnegie Museum of Art</B>, 4400 Forbes Ave., opens "The Art of Structure" on Saturday in the Heinz Architectural Center. "The Art of Structure" explores radical works of 20th-century engineering that are now in the canon of Modernist design. 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, which includes the Carnegie Museum of Natural History, is $15 for adults, $12 for senior citizens age 65 and older, and $11 for students with ID and children 3 to 18, and free for members and children younger than 3. Call 412-622-3131 or visit the website, www.cmoa.org.<B>Penn Gallery</B>, 707 Penn Ave., presents "Nature in Glass: A Solo Exhibit of Work by Gary Guydosh" through Oct. 24. Hours are 11 a.m. to 6 p.m. Wednesdays and Thursdays, 11 a.m. to 8 p.m. Fridays and Saturdays, and 11 a.m. to 5 p.m. Sundays. Admission is free. Call 412-456-6666 or visit www.pgharts.org.<B>Silver Eye Center for Photography,</B> 1015 E. Carson St., hosts "Spectra: New Abstract Photography" through Nov. 13. Hours are noon to 6 p.m. Tuesdays through Saturdays. Admission is free. Call 412-431-1810 or visit www.silvereye.org.<B>Frick Art and Historical Center</B>, 7227 Reynolds St., Point Breeze, hosts tours with the theme "Mourning Customs in the Victorian Era" through Oct. 31. Admission is free; there is a fee for a tour of Clayton, the former home of Henry Clay Frick. Hours are 10 a.m. to 5 p.m. Tuesdays through Sundays; closed Mondays. Call 412-371-0600.<B>Society for Contemporary Crafts</B>, 2100 Smallman St., hosts "DIY: A Revolution in Handicrafts" in the main galleries through March 26. The show highlights works created by 15 artists. Hours are 10 a.m. to 5 p.m. Tuesdays through Saturdays and by appointment Mondays. Call 412-261-7003.<B>Andy Warhol Museum</B>, 117 Sandusky St., presents "Marilyn Monroe: Life as a Legend" from Oct. 23 through Jan. 2. Hours are 10 a.m. to 5 p.m. Tuesdays through Sundays and open until 10 p.m. Fridays. Admission is $15 for adults, $9 for senior citizens and $8 for students and children. Call 412-237-8300.