COUNTY

Old Stone House, near the intersection of Routes 8, 173 and 528, will be the site of the annual Christmas open house from 4 to 9 p.m. Saturday at the historic inn and museum near the intersection of Routes 8, 173 and 528 in Brady Township. Guests can enjoy colonial period musicians and dress, Christmas-themed refreshments, ornament craft making, popcorn stringing, and story time by the fire. Plus, the Old Stone House will be decorated for the season. Admission is free. Call 724-738-2409 or visit www.oldstonehousepa.org.

Maridon Museum, 322 N. McKean St., with its collection of Asian art and pieces of German Meissen porcelain, is open 11 a.m. to 4 p.m. Wednesdays through Saturdays, and will be closed Dec. 26.

Museum admission is $4 for adults, $3 for senior citizens and students, and free for children younger than 8 accompanied by an adult.

Guided tours are available with advanced notice for no extra charge. Call 724-282-0123 or visit www.maridon.org.

Harmony Museum, 218 Mercer St., Harmony, tours include the 1809 main museum building and wine cellar and a neighboring early 19th century house, both built by the communal Harmony Society, and a Mennonite log house, offered from 1 to 4 p.m. daily, except when the museum is closed Mondays and major holidays. Admission is $7 for adults, $6 for senior citizens age 60 and older, and $3 for youths ages 6 to 17. Call 724-452-7341.

PITTSBURGH

National Aviary, 700 Arch St., will have extended evening hours until 9 p.m. as well as refreshments and music on Dec. 13, 20, 26, 27 and 28. The aviary will also, for the first time, feature light displays on its building and habitats, from December through early January. The aviary is open daily from 10 a.m. to 5 p.m. Admission is $15 for adults and $14 for senior citizens age 60 and older and children ages 2 to 12. Some activities cost extra. Call 412-323-7235 or visit www.aviary.org.

Heinz History Center, 1212 Smallman St., will welcome the Smithsonian’s Michael Neufeld for a behind-the-scenes tour and presentation on the Destination Moon: The Apollo 11 Mission exhibition on Sunday. Call 412-454-6000 or visit www.heinzhistorycenter.org.

Children’s Museum, 10 Children’s Way, Allegheny Square, hosts the 19th annual Mister Rogers’ Neighborhood Sweater Drive through Dec. 19. Hours are 10 a.m. to 5 p.m. daily, except holidays. Admission is $16 for adults and $14 for children ages 2 to 18 and senior citizens. Children younger than 2 are admitted free. Call 412-322-5058 or visit www.pittsburghkids.org.

Carnegie Science Center on the North Side presents the Lego exhibit “The Art of the Brick” through Jan. 7. Center hours are 10 a.m. to 5 p.m. Some movies and shows are later. Admission is $19.95 for adults and $11.95 for children ages 3 to 12; films are extra. Call 412-237-3400 or visit CarnegieScienceCenter.org.