Harmony Museum will host “An Evening in Haunted Harmony” from 4 to 10 p.m. Saturday at Stewart Hall, 218 Mercer St., Harmony, during the annual Zelienople-Harmony Fall Festival-Sleepy Hollow Festival. A $2 admission at the door provides entrance to the conference-style program with speakers as well as paranormal and metaphysical vendors. A $10 donation at the door includes admission as well as a choice of one of three ghost/history walking tours that will be conducted at 7, 8 and 9 p.m. Call Steel Town Paranormal at 412-953-9555 or the museum at 724-452-5509.

Butler County Civil War Roundtable will sponsor its third annual Downtown Butler Ghost Walk at 7:30 p.m. Oct. 18, 19, 25 and 26. This 60-minute event will begin in Butler's Diamond Park. The guided walking tour will include Diamond Park and the adjacent Main Street business district. Ghost stories from Butler's historic past to be discussed include Sam Mohawk, The Biddle Boys/Mrs. Soffel, The Headless Man, Chinese Laundry Murder, and the Phantom Civil War Regiment, among others. Children under 18 must be accompanied by an adult. Cost is $10. Reservations are required by calling 724-256-9026.

PITTSBURGH

Heinz History Center, 1212 Smallman St., is hosting “Poptastic!” focusing on Pittsburgh artist Burton Morris and more than 100 original works through Feb. 23. “Poptastic!” is included with regular center admission of $15 for adults, $13 for senior citizens, and $6 for students and children ages 6 to 17. Call 412-454-6000 or visit www.heinzhistorycenter.org. “Pennsylvania's Civil War” continues through Jan. 5.

ToonSeum, Pittsburgh's Museum of Cartoon Art at 945 Liberty Ave., celebrates the 40th anniversary of “Hagar the Horrible” through Dec. 1. Iconic quackers — from Donald to Daffy and Baby Huey to Quackula — continue in “Duck!” through Oct. 20. Museum hours are 10 a.m. to 3 p.m. Mondays, Wednesdays, Thursdays and Sundays and 10 a.m. to 5 p.m. Fridays and Saturdays. Admission is $1 for children ages 6 to 12 and $5 for adults. Call 412-232-0199 or visit www.toonseum.org.

National Aviary, 700 Arch St., hosts “Beaks!” daily at 11 a.m. and 3 p.m. The show features hyacinth and scarlet macaws, a flamingo, and southern ground and trumpeter hornbills. The show is $5 in addition to the regular admission, which is $13 for adults, $12 for senior citizens, $11 for children ages 2 to 18, and free for children younger than 2. Aviary hours are 10 a.m. to 5 p.m. daily. Call 412-323-7235 or visit www.aviary.org.

Children's Museum, 10 Children's Way, Allegheny Square, is showing “Tough Art.” Hours are 10 a.m. to 5 p.m. daily. Admission is $13 for adults, $12 for children ages 2 to 18 and senior citizens, and free for children younger than 2. Call 412-322-5058 or visit www.pittsburghkids.org.

Carnegie Science Center, North Side, hosts Parents Night Out on Saturday as well as Nov. 10 and Dec. 7. Call 412-237-3400 or visit CarnegieScienceCenter.org.

Phipps Conservatory and Botanical Gardens, 1 Schenley Park, hosts Farmers at Phipps from 2:30 to 6:30 p.m. Wednesdays through the last week of October. Conservatory hours are 9:30 a.m. to 5 p.m. daily and until 10 p.m. on Fridays. Admission is $15 for adults, $14 for senior citizens and students, and $11 for children ages 2 to 18. Call 412-622-6914 or visit phipps.conservatory.org.

Carnegie Museum of Natural History, 4400 Forbes Ave., Oakland, presents “Roads of Arabia: Archaeology and History of the Kingdom of Saudi Arabia” through Nov. 3. Hours are 10 a.m. to 5 p.m. Tuesdays to Saturdays, with extended hours until 8 p.m. Thursdays, and noon to 5 p.m. Sundays. Admission is $17.95 for adults, $14.95 for senior citizens, and $11.95 for students and children ages 3 to 18. Admission after 4 p.m. Thursdays is discounted. Call 412-622-3131 or visit www.carnegiemnh.org.

Heinz History Center, 1212 Smallman St., is hosting “Poptastic!” focusing on Pittsburgh artist Burton Morris and more than 100 original works through Feb. 23. “Poptastic!” is included with regular center admission of $15 for adults, $13 for senior citizens, and $6 for students and children ages 6 to 17. Call 412-454-6000 or visit www.heinzhistorycenter.org. “Pennsylvania's Civil War” continues through Jan. 5.ToonSeum, Pittsburgh's Museum of Cartoon Art at 945 Liberty Ave., celebrates the 40th anniversary of “Hagar the Horrible” through Dec. 1. Iconic quackers — from Donald to Daffy and Baby Huey to Quackula — continue in “Duck!” through Oct. 20. Museum hours are 10 a.m. to 3 p.m. Mondays, Wednesdays, Thursdays and Sundays and 10 a.m. to 5 p.m. Fridays and Saturdays. Admission is $1 for children ages 6 to 12 and $5 for adults. Call 412-232-0199 or visit www.toonseum.org.National Aviary, 700 Arch St., hosts “Beaks!” daily at 11 a.m. and 3 p.m. The show features hyacinth and scarlet macaws, a flamingo, and southern ground and trumpeter hornbills. The show is $5 in addition to the regular admission, which is $13 for adults, $12 for senior citizens, $11 for children ages 2 to 18, and free for children younger than 2. Aviary hours are 10 a.m. to 5 p.m. daily. Call 412-323-7235 or visit www.aviary.org.Children's Museum, 10 Children's Way, Allegheny Square, is showing “Tough Art.” Hours are 10 a.m. to 5 p.m. daily. Admission is $13 for adults, $12 for children ages 2 to 18 and senior citizens, and free for children younger than 2. Call 412-322-5058 or visit www.pittsburghkids.org.Carnegie Science Center, North Side, hosts Parents Night Out on Saturday as well as Nov. 10 and Dec. 7. Call 412-237-3400 or visit CarnegieScienceCenter.org.Phipps Conservatory and Botanical Gardens, 1 Schenley Park, hosts Farmers at Phipps from 2:30 to 6:30 p.m. Wednesdays through the last week of October. Conservatory hours are 9:30 a.m. to 5 p.m. daily and until 10 p.m. on Fridays. Admission is $15 for adults, $14 for senior citizens and students, and $11 for children ages 2 to 18. Call 412-622-6914 or visit phipps.conservatory.org.Carnegie Museum of Natural History, 4400 Forbes Ave., Oakland, presents “Roads of Arabia: Archaeology and History of the Kingdom of Saudi Arabia” through Nov. 3. Hours are 10 a.m. to 5 p.m. Tuesdays to Saturdays, with extended hours until 8 p.m. Thursdays, and noon to 5 p.m. Sundays. Admission is $17.95 for adults, $14.95 for senior citizens, and $11.95 for students and children ages 3 to 18. Admission after 4 p.m. Thursdays is discounted. Call 412-622-3131 or visit www.carnegiemnh.org.