Harmony Museum on Mercer Street in Harmony, representing the town founded in 1804 by pacifist German Lutheran Separatists and their Harmony Society, has expanded its Christmas season model railroad display. The antique Yobp-Eckstein log village and O gauge railroad is joined by an HO gauge layout. Also new is a “hands-on” wood push train for preschoolers on a tiny child’s-level table. The displays are available for viewing during regular guided museum tours from 1 to 4 p.m. Tuesdays through Sundays; closed Mondays and holidays. Reservations are suggested for weekends and required for groups. Call 724-452-7341 or 888-821-4822, or visit the website at www.harmonymuseum.org.

REGIONA 28-foot-by-16-foot HO model railroad display will be running from 12:30 to 5 p.m. Saturdays and Sundays until the end of January at Donaldson Motors, 714 River Ave. Call 724-867-2293.

PITTSBURGHPhipps Conservatory and Botanical Gardens offers the Winter Flower Show and new Winter Light Garden through Jan. 6. Visitors can expect elaborate wreaths decorated by staff horticulturists and educators; an 1893 World’s Fair-themed Garden Railroad; a cheerful woodland where bears and cardinals trim a tree against a yellow moon with Santa’s silhouette; and Phipps’ own traditional cut fir decorated with thousands of LED lights. Holiday hours are from 9:30 a.m. to 10 p.m. daily. The light garden shines from 5 to 10 p.m. Admission is $12 for adults, $11 for senior citizens age 62 and older and students with ID, $9 for children ages 2 to 18, and free for members and children younger than 2. Visit phipps.conservatory.org.Heinz History Center, 1212 Smallman St., in addition to its regular hours from 10 a.m. to 5 p.m. every day except for Christmas Day and New Year’s Day, will offer extended hours until 8 p.m. through Sunday and Jan. 2 to 6. Exhibits include “Gridiron Glory: The Best of the Pro Football Hall of Fame” and “From Slavery to Freedom,” a long-term exhibit highlighting the history of the anti-slavery movement, the Underground Railroad, and the impact of 19th century activism on the modern quest for civil and human rights in Pittsburgh. Admission is $15 for adults, $13 for visitors age 62 and older, $10 for students and children ages 6 to 17, and free for children age 5 and younger. Call 412-454-6000 or visit www.heinzhistorycenter.org.