Catch the train
The Morris Arboretum's fantastic Garden Railway Display features model trains on a quarter-mile of track with loops, tunnels, and nine bridges (including a trestle bridge you can walk under). But it's just about at the end of its run, finishing on New Year's Eve. Morris Arboretum, 100 E. Northwestern Ave. Admission: $16; $14 seniors; $7 students and ages 3 to 18; children under 3 and members free. Time: 10 a.m. to 5 p.m. Friday through Monday. Information: 215-247-5777.
Last of the cheer
The 11th Hour Theatre Company's Winter Wonderettes, in which a 1960s girl group comes out of retirement to save the day at a hardware store's Christmas party, is finishing its run. Theatre Horizon, 401 DeKalb St., Norristown. Times: 8 p.m. Friday, 3 and 8 p.m. Saturday, 3 p.m. Sunday. Admission: $15 to $31. Call 267-987-9865. . . . The holiday variety show Oh, What Fun!, featuring sketches, improvisation, tap dancing, a tribute to Johnny Carson's Carnac the Magnificent, and even a "Worst Holiday Songs Ever" medley, wraps it all up this weekend. Act II Playhouse, 56 E. Butler Ave., Ambler. Time: 8 p.m. Friday and Saturday, 3 p.m. Sunday. Admission: $22 to $33. Information: 215-654-0200.
The Philadelphia Mandolin and Guitar Ensemble celebrates the holidays with music by O'Carolan, Bach, Mozart, and contemporary jazz composer Jim Dragoni in a concert featuring guest vocalist Phyllis Chapell. Christ Ascension Lutheran Church, 8300 Germantown Ave. Admission: $25 Saturday; $15 Sunday. Times: 8 p.m. Saturday; 3 p.m. Sunday. Information: 215-247-4233.