Cooper Cabin Pioneer Homestead, 199 Cooper Road in Cabot, will host Woodcarving Day from 1 to 4 p.m. Sunday. Bill Vogel will demonstrate. Docent-tours of the cabin will be available. Admission is $3 for adults, $2 for children ages 5 to 17 and senior citizens, and free for children younger than 5. Call the Butler County Historical Society at 724-283-8116.

Butler County Heritage Center, 119 W. New Castle St., with the new exhibit of the Jay Bee Miniature Circus, is open from noon to 4 p.m. Wednesdays and 9 a.m. to noon Fridays through August, excluding legal holidays. Admission is $3 for adults, $1 for children ages 5 to 17, and free for children younger than 5. Call 724-283-8116.

Lowrie-Shaw House, built in 1828 by Walter Lowrie, Butler's only United States senator, at 123 W. Diamond St., is open through September from noon to 4 p.m. Mondays, Wednesdays and Fridays, except legal holidays. Admission is $3 for adults, $1 for children ages 5 to 17, and free for children younger than 5. Call 724-283-8116.

Harmony Museum, 218 Mercer St., Harmony, a National Historic Landmark, represents the town founded in 1804 by pacifist German Lutheran Separatists, and their Harmony Society. The area was resettled in 1815 when Mennonite "second founder" Abraham Ziegler bought the society's holdings. The museum, open all year, offers guided tours from 1 to 4 p.m. daily except Mondays and holidays; reservations suggested for weekends and required for groups. Call 724-452-7341 or 888-821-4822, e-mail hmuseum@zoominternet.net., or visit the Web site, www.harmonymuseum.org.

Providence Plantation will host "How the West Was Lost for Indians" from 5 to 8 p.m. Saturday at the plantation, 300 Textor Hill Road, Evans City. Cost is $10 for adults and $5 for children age 12 and younger. Dinner following the program costs an additional $15 for adults and $7.50 for children. Call 724-538-8818 to check availability and to make reservations for dinner, or visit the Web site, www.frontier-history.org.

Passavant House and Buhl House, historic house museums of the Zelienople Historical Society, at 243 and 221 S. Main St. in Zelienople, are now open for the season. Regularly scheduled tours begin at 1 and 2:30 p.m. Wednesdays and Saturdays through September. Admission, which covers both houses, is $5 for adults, $3 for students. Call 724-452-9457.

<B>Carnegie Science Center</B>, One Allegheny Ave. next to Heinz Field on the North Side, hosts "Titanic: The Artifact Exhibition" through Sept. 1. This exhibit requires a separate, timed-entrance ticket. Science Center hours are 10 a.m. to 7 p.m. Fridays and Saturdays and from 10 a.m. to 5 p.m. Sundays through Thursdays; closed holidays.Admission to the science center is $14 for adults and $10 for senior citizens age 62 and older and children 3 to 18. Call 412-237-3400 or visit www.carnegiesciencecenter.org.<B>Pittsburgh Zoo and PPG Aquarium</B>, 7340 Butler St., is open 9 a.m. to 6 p.m. for the summer. Admission through Nov. 30 is $12 for adults, $11 for senior citizens age 60 and older, $10 for children ages 2 to 13, and free for children younger than 2. Parking is free. Call 412-465-2524.<B>Rodef Shalom Biblical Botanical Garden</B>, 4905 Fifth Ave., exhibits "Land of Milk and Honey" with new plantings, displays and tours, through Sept. 15. The garden displays more than 100 temperate and tropical plants grown in ancient Israel. Hours are noon to 1 p.m. Saturdays and 10 a.m. to 2 p.m. Sundays through Thursdays, as well as 7 to 9 p.m. Wednesdays through August. Admission is free as is parking. Call 412-621-6566.