Harmony Museum will present a quality-focused antique show and sale at its 1805 barn annex at 303 Mercer Road in Harmony from 10 a.m. to 5 p.m. Saturday and 11 a.m. to 4 p.m. Sunday. Admission is $3, with proceeds benefiting museum operations. Lunch and refreshments will be available. The 40th annual conference of the Communal Studies Association will be held Oct. 3 to 5 at Harmony and Ambridge, the first and final homes respectively of the Harmony Society of Lutheran Separatists from Germany. Call 724-452-7341 or visit www.harmonymuseum.org.

Meadowcroft Rockshelter and Historic Village, 401 Meadowcroft Road in Avella, Washington County, will host the fifth annual American Indian Heritage Weekend from 10 a.m. to 5 p.m. Saturday and Sunday. Admission is $12 for adults, $11 for senior citizens, and $6 for children ages 6 to 17. Call 724-587-3412.Drake Well Museum, 202 Museum Lane, Titusville, will be the site of “Drake Well by Moonlight,” focusing on the history of the oil industry, starting at 6 p.m. Saturday. Admission is $8 for adults and $3 for children ages 3 to 11. Call 814-827-2797 or visit drakewell.org.

Children’s Museum, 10 Children’s Way, Allegheny Square, is showing the exhibit “Ball,” featuring 500 beach balls, larger inflatable balls, a disco ball and music, through Sunday. “Tough Art” runs through Dec. 31. 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.Phipps Conservatory and Botanical Gardens, 1 Schenley Park, will host Science Stories from the Field from 7 to 8:30 p.m. Friday and Science Casual Conversations from 1:30 to 3 p.m. Saturday. Farmers at Phipps runs from 2:30 to 6:30 p.m. Wednesdays. The summer flower show continues through Oct. 6. Conservatory hours are 9:30 a.m. to 5 p.m. daily and until 10 p.m. 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.Heinz History Center, 1212 Smallman St., presents “Poptastic!” focusing on Pittsburgh artist Burton Morris and more than 100 original works of art. The exhibit continues through Feb. 23 and is included with center admission of $15 for adults, $13 for senior citizens, and $6 for students and children ages 6 to 17. “Pennsylvania’s Civil War” continues through Jan. 5. Call 412-454-6000 or visit www.heinzhistorycenter.org.National Aviary, 700 Arch St., hosts the show “Beaks!” daily at 11 a.m. and 3 p.m. through Jan. 1. The show features hyacinth and scarlet macaws, a flamingo, a southern ground hornbill and a trumpeter hornbill. The show is $5 in addition to the regular cost of 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.ToonSeum, Pittsburgh’s Museum of Cartoon Art at 945 Liberty Ave., will showcase original animation art, comic art and artifacts of some of cartooning’s most iconic ducks — from Donald to Daffy and Baby Huey to Quackula — in “Duck!” from Friday 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.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 with ID and children ages 3 to 18. Admission after 4 p.m. Thursdays is discounted. Call 412-622-3131.