Harmony Museum on Mercer Street in Harmony features the Yobp-Eckstein village and train-trolley display in the Wagner House annex during regular guided museum tours, which are 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. Visit www.harmonymuseum.org.

<B>Nationality Rooms</B> at the University of Pittsburgh's Cathedral of Learning, 4200 Fifth Ave., are decorated in the styles of their holiday traditions through Friday. Reservations for guided tours are accepted for groups of 10 or more made by prior arrangement. Tour fees are $3 for adults and $1 for youths ages 8 to 18. Call 412-624-6000.<B>ToonSeum</B>, Pittsburgh's Museum of Cartoon Art at 945 Liberty Ave., hosts a screening of “Castle in the Sky” at 7 p.m. today. In the film, after a daring escape from sky pirates, a young girl teams up with an orphaned miner to uncover the secrets of a magical city floating in the clouds. Films are all family-friendly. Admission for screenings is by donation. 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. 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>Children's Museum</B>, 10 Children's Way, Allegheny Square, continues “Tough Art” through Sunday and “Whoosh!” through May 29. 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 senior citizens older than 65 and children ages 2 to 18, and free for children younger than 2. Parking is $5 for nonmembers. Call 412-322-5058 or visit www.pittsburghkids.org.<B>Carnegie Museum of Natural History, </B>4400 Forbes Ave., Oakland, displays dinosaur bones and gems plus “Winging It: An Experimental Gallery About Birds,” through March 19. 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>Carnegie Science Center, </B>North Side, will be closed Saturday due to the Steelers game. Free admission to the center, an Omnimax film and parking will be available on Monday for Martin Luther King Day, thanks to Duquesne Light. The Miniature Railroad and Village exhibit continue. Regular center hours are 10 a.m. to 5 p.m. Sundays through Fridays and 10 a.m. to 7 p.m. Saturdays. Admission is $17.95 for adults and $9.95 for children ages 3 to 12. Omnimax films are extra. Call 412-237-3400. Visit www.carnegiesciencecenter.org.<B>Phipps Conservatory and Botanical Gardens</B>, One Schenley Park, is open daily from 9:30 a.m. to 5 p.m. and Fridays until 10 p.m. 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; and free for children younger than 2. Call 412-622-6914 or visit the website, www.phipps.conservatory.org.<B>Heinz History Center</B>, 1212 Smallman St., is showing a new 1960 World Series exhibition called Beat 'Em Bucs — The Story of the 1960 Pittsburgh Pirates. Center hours are 10 a.m. to 5 p.m. daily. 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.<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.