COUNTY

Butler County Historical Society at the Senator Walter Lowrie House Museum, 123 W. Diamond St., can be reached at 724-283-8116 or www.butlerhistory.com.

Harmony Museum, 218 Mercer St., Harmony, has tours that include the 1809 main museum building and wine cellar and a neighboring early 19th century house, both built by the communal Harmony Society, and a Mennonite log house, offered from 1 to 4 p.m. daily, except when the museum is closed Mondays and major holidays. Admission is $7 for adults, $6 for senior citizens age 60 and older, and $3 for youths ages 6 to 17. Call 724-452-7341.

PITTSBURGH

Heinz History Center, 1212 Smallman St., has opened the exhibit “American Spirits: The Rise and Fall of Prohibition.” The History Center is open from 10 a.m. to 5 p.m. daily. Regular center admission is $16 for adults, $14 for senior citizens age 62 and older, and $6.50 for students and children ages 6 to 17. Call 412-454-6000 or visit www.heinzhistorycenter.org.

Carnegie Science Center on the North Side will celebrate National Engineers Week with Engineer the Future activities through Saturday. Winter hours are from 10 a.m. to 5 p.m. most days. Admission is $18.95 for adults and $11.95 for children ages 3 to 12; films are extra. Call 412-237-3400 or visit CarnegieScienceCenter.org.

National Aviary, 700 Arch St., presents penguin chicks born Dec. 16 and 20. The Aviary is open daily from 10 a.m. to 5 p.m. Admission is $14 for adults and $13 for senior citizens and children ages 2 to 12. Some activities cost extra. Call 412-323-7235 or visit www.aviary.org.