Harmony Museum on Mercer Street in Harmony is open from 1 to 4 p.m. daily; closed Mondays and holidays. Reservations are suggested for weekends and required for groups. Call 724-452-7341 or 888-821-4822, or visit www.harmonymuseum.org.

<B>National Aviary</B>, 700 Arch St., has started its new outdoor free-flight bird show with several species never before seen in free-flight at the Aviary. Two different shows are offered. First is a raptor show featuring eagles, black kites, an auger buzzard and vultures. Several species will make their debut flights in this show, including a bald eagle, a Harris hawk and a southern ground hornbill. A second show features species in the parrot family. FliteZone show times are 11 a.m. and 2:30 p.m. Wednesdays through Saturdays and 2:30 p.m. Sundays. The shows are included in the regular admission price, which is $12 for adults, $11 for senior citizens, $9.50 for children ages 2 to 12, and free for those younger than 2. Aviary hours are 10 a.m. to 5 p.m. Mondays through Saturdays and noon to 5 p.m. Sundays. Admission is $12 for adults; $11 for senior citizens; $9.50 for children ages 2 to 12; and free for children younger than 2. Call 412-323-7235 or visit www.aviary.org.<B>Carnegie Science Center</B>, North Side, will be the site of Celebrate World Environment Day on Saturday and Sunday, featuring films and activities. Visitors can go on a quest to save the environment with Captain Green's Time Machine, a Science on the Road program that was developed in partnership with PPG Industries. Filled with interactive visuals and audience participation, this show has traveled to dozens of schools. Regular science center admission is $17.95 for adults and $9.95 for children ages 3 to 12; admission is discounted for senior citizens on Tuesdays. Parking is $5. Center hours are 10 a.m. to 7 p.m. Fridays and Saturdays and 10 a.m. to 5 p.m. Sundays through Thursdays; closed holidays. Call 412-237-3400 or visit www.carnegiesciencecenter.org.<B>Pittsburgh Children's Museum,</B> 10 Children's Way, Allegheny Square, continues the exhibit "Yinz Play!" through Sunday. An International Children's Painting Competition Exhibition will open Friday and run through Aug. 1. This competition invites children from around the world, ages 6 to 14, to illustrate their personal view of the environment. "World Environment Day: Make a Splash!" will take place from noon to 2:30 p.m. Saturday. "Jazz with Lee Robinson" will be from 1 to 2:30 p.m. Sunday. Museum hours are 10 a.m. to 5 p.m. Mondays to Saturdays; and noon to 5 p.m. Sundays, except holidays. Admission is $11 for adults; $10 for senior citizens older than 65 and children ages 2 to 18, and free for children younger than 2. Parking is $5 for non-members. Call 412-322-5058 or visit www.pittsburghkids.org.<B>Phipps Conservatory and Botanical Gardens</B> in Schenley Park continues the summer flower show, "Gargoyles in the Garden," through Sept. 12. Also open is the annual Butterfly Forest through Sept. 6. Phipps is open daily from 9:30 a.m. to 5 p.m. with extended hours until 10 p.m. Fridays. Admission is $12 for adults, $11 for senior citizens age 62 and older and students with valid ID, $9 for children ages 2 to 18. Call 412-622-6914 or visit phipps.conservatory.org.<B>ToonSeum</B>, Pittsburgh's Museum of Cartoon Art at 945 Liberty Ave., hosts ""The Art of AKIRA" through July 18, about the film by Katsuhiro Otomo. Regular museum hours are 10 a.m. to 3 p.m. Wednesdays and Thursdays, 10 a.m. to 5 p.m. Fridays and Saturdays and 11 a.m. to 4 p.m. Sundays, except holidays. Museum admission is $4 for adults and $3 for children ages 5 to 17; children younger than 5 are admitted free. Visit www.toonseum.org.<B>Heinz History Center</B>, 1212 Smallman St., continues "Discover the Real George Washington: New Views from Mount Vernon," an exhibition from George Washington's Mount Vernon Estate & Gardens, through July 18. The exhibition features nearly 100 objects, including full-scale figures of Washington, architectural models, decorative and fine art items, maps, manuscripts and paintings. Continuing are "Pittsburgh: A Tradition of Innovation" celebrating Pittsburgh's impact on the world over the past 250 years, and "Behind the Scenes with the Pittsburgh Steelers: Photographs by Mike Fabus." Center hours are 10 a.m. to 5 p.m. daily, except holidays. Admission is $10 for adults, $9 for senior citizens age 62 and older, $5 for students with ID and for children ages 4 to 17, and free for children 3 and younger. Call 412-454-6000.