COUNTYHarmony Museum, 218 Mercer St., will have its annual Harmoniefest dinner program commemorating 260-plus years of history at 6 p.m. Feb. 13 in Stewart Hall. The Greater Harmony Chorus, an all-women a cappella chorus founded 40 years ago in Harmony, will sing. Reservations are required by Feb. 5. Call 724-452-7341 or visit www.harmonymuseum.org.

REGIONThe annual miniature railroad display in Emlenton is open weekends in January. The layout is open from 12:30 to 5 p.m. Saturdays and Sundays at Donaldson Motors, 714 River Ave. The main layout is HO-scale and covers 60 square feet. There also are three 4- by 8-foot displays featuring Lionel, Marx, American Flyer and Thomas the Tank Engine along with miniature train engines, cars and trucks. Admission is free. Donations are accepted to help cover costs. Call 724-867-2293.

PITTSBURGHCarnegie Science Center, North Side, will have free admission for Duquesne Light Conservation Day, 10 a.m. to 5 p.m. Monday. The day will include free general admission, parking, and an Omnimax film as long as they’re available. Visit CarnegieScienceCenter.org.Phipps Conservatory and Botanical Gardens, 700 Frank Curto Drive, is open 9:30 a.m. to 5 p.m. daily, and until 10 p.m. Fridays. Admission is $15 for adults, $14 for seniors and $11 for children ages 2 to 18. Visit phipps.conservatory.org.National Aviary, 700 Arch St., has male snowy owls “Tundra” and “Glacier” on display until temperatures warm in spring. Hours are 10 a.m. to 5 p.m. daily. Admission is $14 for adults, $13 for senior citizens and $12 for children ages 2 to 18; shows are extra. Visit www.aviary.org.Children’s Museum, Allegheny Square, presents the display “Voyage to Vietnam: Celebrating the Tet Festival” through Sunday. Hours are 10 a.m. to 5 p.m. daily. Admission is $14 for adults and $13 for children ages 2 to 18 and senior citizens. Visit www.pittsburghkids.org.Fort Pitt Museum, Point State Park is closed through Jan. 30.