Harmony Museum on Mercer Street in Harmony is the site of the annual Christmas season display of the Yobp-Eckstein log house village and toy railroad on view through early January. Hours are 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 the Web site, www.harmonymuseum.org.

<B>Carnegie Science Center</B>, One Allegheny Ave., North Side, has reopened SportsWorks, plus the Miniature Railroad & Village exhibit with the new replica of Fallingwater. "The Polar Express" has limited showing in the Rangos Omnimax Theater. The science center will be closed Sunday because of the Steelers game. Regular 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. Regular admission is $14 for adults and $10 for senior citizens age 62 and older and children 3 to 12. Parking is $5. Call 412-237-3400 or visit the Web site, www.carnegiesciencecenter.org.<B>Heinz History Center</B>, 1212 Smallman St., continues "Pittsburgh: A Tradition of Innovation" celebrating Pittsburgh's impact on the world over the past 250 years, and "Lincoln: The Constitution and the Civil War" and "Lincoln Slept Here," a traveling exhibition from the National Constitution Center in Philadelphia on view through Jan. 3. Also showing are "Behind the Scenes with the Pittsburgh Steelers: Photographs by Mike Fabus" and "Forbes Field: A Century of Memories." History 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.<B>Phipps Conservatory and Botanical Gardens</B> in Schenley Park continues "Life in the Gardens: Fräbel Glass at Phipps" through January. This exhibit features the work of German-born artist Hans Godo Fräbel, a founding father of modern glass sculpture. Phipps is open daily from 9:30 a.m. to 5 p.m. and until 10 p.m. on Fridays, except holidays. Admission rates are $10 for adults, $9 for seniors age 62 and older and students with ID, and $7 for children ages 2 to 18. Phipps members and children younger than 2 are admitted free. Call 412-622-6914 or visit www.phipps.conservatory.org.<B>Pittsburgh Children's Museum</B>, 10 Children's Way, Allegheny Square, is presenting "Tough Art" through Jan. 10. Joe Wos and his interactive program "Toons and Tunes" will perform from noon to 2 p.m. Monday. Additional activities are planned for Tuesday and Wednesday. 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 and children ages 2 to 18, and free for children younger than 2. Parking is $5 for nonmembers. Call 412-322-5058 or visit the Web site, www.pittsburghkids.org. The museum will be closed on Friday for Christmas Day and Jan. 1 for New Year's Day. The New Year's Eve celebration from 11:30 a.m. to 3 p.m. Dec. 31 will include a singalong to "Auld Lang Syne" with the Lee Robinson Duo and a Family Dance Party in the Theater.<B>ToonSeum</B>, Pittsburgh's Museum of Cartoon Art at 945 Liberty Ave., is open during December from 10 a.m. to 3 p.m. Wednesdays and Thursdays, 10 a.m. to 7 p.m. Fridays, 10 a.m. to 9 p.m. Saturdays and 11 a.m. to 4 p.m. Sundays, except holidays. Admission is $4 for adults and $3 for children ages 5 to 17; children younger than 5 are admitted free. Visit the Web site, www.toonseum.org.<B>National Aviary</B>, 700 Arch St., has winter hours from 10 a.m. to 5 p.m. Mondays through Saturdays and noon to 5 p.m. Sundays. Admission is $10 for adults; $9 for senior citizens; $8.50 for children ages 2 to 12; and free for children younger than 2. Call 412-323-7235 or visit the Web site, www.aviary.org.