Harmony Museum, Mercer Street, Harmony, offers guided tours from 1 to 4 p.m. daily except Mondays. Reservations are suggested for weekends and required for groups. Call 724-452-7341 or 888-821-4822, or visit www.harmonymuseum.org.

<B>Children’s Museum</B>, 10 Children’s Way, Allegheny Square, continues “Whoosh! It’s All About Air” through May 29. Splink, an imaginative performance by dancers, instrumentalists, singers, actors, performance poets and circus artists from Pittsburgh area high schools, will have shows at 1:30 and 2:30 p.m. Saturday and Sunday. Museum hours are 10 a.m. to 5 p.m. Mondays to Saturdays and noon to 5 p.m. Sundays. Admission is $11 for adults, $10 for children ages 2 to 18 and senior citizens, and free for children younger than 2. Parking is $5 for nonmembers or $3 for members. On-street, metered parking also is available. Call 412-322-5058 or visit www.pittsburghkids.org.<B>ToonSeum</B>, Pittsburgh’s Museum of Cartoon Art at 945 Liberty Ave., hosts a screening of “Princess Mononoke” at 7 p.m. today. This film contains adult themes and war-related violence. Admission for the screenings is by donation. “The Art of Caroll Spinney,” best known for his portrayal of Oscar the Grouch and Big Bird on “Sesame Street” concludes Sunday. 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. 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>Carnegie Museum of Natural History, </B>4400 Forbes Ave., Oakland, displays dinosaur bones and gems plus through March 19 an exhibit called “Winging It: An Experimental Gallery About Birds,” showing the museum’s avian research and collections. Museum hours are 10 a.m. to 5 p.m. Tuesdays through Saturdays, with additional hours until 8 p.m. Thursdays, and noon to 5 p.m. Sundays. Admission, which includes the Carnegie Museum of Art, is $15 for adults, $12 for senior citizens, and $11 for students with ID and children ages 3 to 18, and free for members and children younger than 3. Call 412-622-3131 or visit www.carnegiemnh.org.<B>Nationality Rooms</B> at the University of Pittsburgh’s Cathedral of Learning, 4200 Fifth Ave., take reservations for guided tours for groups of 10 or more. Tour fees are $3 for adults and $1 for youths ages 8 to 18. Call 412-624-6000.<B>National Aviary</B>, 700 Arch St., is open from 10 a.m. to 5 p.m. daily. Admission is $12 for adults, $11 for senior citizens, $9.50 for children ages 2 to 12, and free for those younger than 2. Call 412-323-7235 or visit www.aviary.org.