SLIPPERY ROCK — The 23rd annual Slippery Rock Heritage Festival will be celebrated on Sept. 28 on the Slippery Rock University campus near North Hall and Old Main.

Activities will include a talent show, car show, pet parade and show, food and crafters. Call 724-738-2869 for more information.

CRANBERRY TWP — Country singer Alli Gillis will give a free concert as part of a family friendly event from 12:30 to 4:30 p.m. Sunday on the grounds of BHS WholeHealth at the Rose E. Schneider YMCA, 2001 Ehrman Road.Those attending are to take blankets or lawn chairs, though grilling and alcohol are prohibited.Food and health-related vendors will participate.In case of rain, the concert will held in the YMCA's gym.For more information, visit the Web site, www.bhswholehealth.org.

SAXONBURG — Penn's Colony Festival will take place weekends only Sept. 20 to 21 and 27 to 28 on the grounds off of Saxonburg Boulevard. Hours will be 10 a.m. to 6 p.m. Saturdays and 10 a.m. to 5 p.m. Sundays.Activities will include Braddock's Field re-enactments, citizens field drills, artillery skills challenge, court proceedings, pioneer pastimes and children's contests.Entertainment will feature Celtic music and dance colonial American music, talks on the history and culture of Scottish dress and weaponry, glass blowing and stained glass making, furniture and basket making, woodcarving, spinning and knitting, and decorative painting.Admission is $6.50 for those ages 16 to 59, $5.50 for those age 60 and older, $4.50 for those ages 8 to 15 and free for those younger than 8. On-site parking is free.For more information, call 724-352-9922 or visit the Web site, www.pennscolony.com.

GROVE CITY — Highland Alpaca will celebrate the second annual National Alpaca Farm Days on Sept. 27 and 28 with activities and artist demonstrations.From 11 a.m. to 4 p.m., the farm will welcome guests to participate in an alpaca fiber project, take photographs with the animals and preview the fall and winter alpaca fashions.Highland Alpaca is at 1404 Millbrook Road. It was opened in 1998 by Fay Steving and Jenny Lindsay, who are both retired teachers. Call 814-786-8105.

CRANBERRY, Venango County — In addition to Cranberry Township in Butler County, Venango County to our north also has a town of Cranberry, and it will be the site of the 2008 Cranberry Festival on Sep. 20 at Morrison Park in Seneca.A golf skills event, ice cream social, bake-off, art exhibit, car show, crafts, children's activities, food and fireworks are planned.For more information, call the Venango Area Chamber of Commerce at 814-676-8521, or visit the Web site, www.cranberry-pa.org.

PITTSBURGH — David Byrne, co-founder of the band Talking Heads, will perform "David Byrne: Songs of David Byrne and Brian Eno" at 8 p.m. Nov. 7 at the Carnegie Music Hall in Oakland.Tickets will be available beginning at 10 a.m. Friday by calling 412-322-1919, or visiting the Web site, www.ticketmaster.com.

PITTSBURGH — Ringling Bros. and Barnum & Bailey presents Bellobration, an interactive and high-energy circusBellobration features the mischievous, yet endearing, comic daredevil Bello, who performs alongside Asian elephants, Royal Bengal and white tigers, and acrobats.The show will take place at the Mellon Arena from Oct. 30 to Nov. 2.Shows begin at 7 p.m. Oct. 30; 10:30 a.m. and 7 p.m. Oct. 31; at 11 a.m. and 3 and 7 p.m. Nov. 1, and at 1 and 5 p.m. Nov. 2.Tickets range from $12 to $80. All seats are reserved.For tickets, call 412-323-1919 or visit the Web site, www.ringling.com.

NEW CASTLE — The 18th annual Lawrence County Polish Day is planned for Sept. 21 at Cascade Park Pavilion.Entertainment, music and food will be featured. The kitchen opens at noon and dancing starts at 1:30 p.m.Admission is $12; children age 16 and younger are admitted free.For more information, call 724-658-5916, 724-658-9988 or 724-658-7990.

PITTSBURGH — An exhibition of masterful architectural etchings and engravings, "Giovanni Battista Piranesi: Architecture and the Spaces of the Imagination," will be on view from Nov. 1 through Feb. 15 at Carnegie Museum of Art, 4400 Forbes Ave.About 45 works on paper created by Piranesi (1720–1788), his contemporaries and his followers will explore the idea of architecture as a subject in art.The core of the exhibition focuses on Piranesi's Imaginary Prisons (Carceri d'invenzione), a series of fantastical, haunting prints from the 1760s that are arresting in their scale, attention to detail, composition and texture.Museum hours are 10 a.m. to 5 p.m. Tuesdays through Sundays, plus for the summer, from 10 a.m. to 5 p.m. Mondays as well. Closed major holidays.Admission, which includes the Carnegie Museum of Natural History, is $15 for adults, $12 for senior citizens and $11 for students and children age 3 and older. Call 412-622-3131 or visit the Web site, www.cmoa.org.