The Old Stone House will host “Taverns and Brew of Early America,” a program about the role of beer in colonial America, at 3 p.m. Saturday as part of the “Homebrewed History” series. Tickets, available for those 21 and older, are $30. Call 724-738-4964 or visit www.oldstonehousePA.org.

Harmony Museum, 218 Mercer St., Harmony, hosts its 10th annual antique gun show Aug. 9 along with an auction for a percussion rifle attributed to 19th century Harmony gunsmith Charles Flowers. Show hours in Stewart Hall are 9 a.m. to 4 p.m. The auction is at 1 p.m. Admission is $5 with proceeds benefiting the museum. Call 724-452-7341 or visit www.harmonymuseum.org.

ToonSeum, 945 Liberty Ave., hosts “When Universes Collide: The Ultimate Superhero Smackdown” through Sept. 20. An opening party will be from 7 to 10 p.m. today. Admission is $6 for those over 13 and $3 for children ages 6 to 12. Senior citizens, college students, veterans and active military pay $5. Visit toonseum.org.Phipps Conservatory and Botanical Gardens hosts the summer flower show through Oct. 5. 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. Visit phipps.conservatory.org.Carnegie Science Center, North Side, hosts “Blue!” through Jan. 1. In conjunction, blues and bluegrass performances will be held at 1 p.m. Saturdays through Aug. 30. Performances are free with general admission of $17.95 for adults and $11.95 for children ages 3 to 12. Call 412-237-1637.Heinz History Center, 1212 Smallman St., presents “Pittsburgh's Lost Steamboat: Treasures of the Arabia.” Admission is $15 for adults, $13 for senior citizens, and $6 for students and children ages 6 to 17. Visit www.heinzhistorycenter.org.Children's Museum, 10 Children's Way, Allegheny Square, hosts “XOXO: An Exhibit About Love and Forgiveness” through Aug. 31. Admission is $14 for adults and $13 for children ages 2 to 18 and senior citizens. Hours are 10 a.m. to 5 p.m. daily. Visit www.pittsburghkids.org.