Maryland. The Annual Winter Model Railroad Open House is Sundays from 1 to 4 p.m. through Feb. 5 at Frederick County Society of Model Engineers, 423 E. Patrick St., Frederick. www.fcsme.com
New Jersey. The 45th annual New Jersey RV & Camping Show is Jan. 20-22 at the New Jersey Convention Center, 97 Sunfield Ave., Edison. Friday 1-8 p.m.; Saturday 10 a.m.-8 p.m.; Sunday 11 a.m.-5 p.m. Adults $10 ($7 online); children 12 and under free.
www.visitnj.org/node/20318; 800-441-0013.
New York. Roberson Museum marks the 150th anniversary of the Civil War with an exhibition featuring true stories and an interactive encampment. Through various learning experiences, visitors will discover how the Civil War changed lives. 30 Front St., Binghamton. www.roberson.org; 607-772-0660.
Pennsylvania. The Pinewood Derby, sponsored by Cub Pack 64, is Jan. 31 at Jefferson County Fairgrounds, Shields Building, 1514 Rte. 28 N., Brookville. 814-265-0640.
Vermont. Studio Place Arts, a community center for the visual arts, offers workshops, classes, and a gallery of changing exhibits in a restored historic building on North Main Street in Barre. Open Tuesday-Saturday. 802-479-7069; www.studioplacearts.com.
Virginia. It's all things wedding at the Uniquely Yours Bridal Showcase, with special appearances by Preston Bailey, a floral designer and celebrity event planner. 11 a.m. to 5 p.m. Jan. 15 at Norfolk Scope Exhibition Hall & Arena, 201 E. Brambleton Ave., Norfolk. uniquelyyoursbridalshowcase.com; 757-406-7947.
Washington, D.C. "30 Americans" at the Corcoran Gallery of Art is a survey of work by many of the most important African American artists of the last three decades. It focuses on issues of racial, sexual, and historical identity in contemporary culture. Through Feb. 18. 500 17th St. NW. www.corcoran.org.
West Virginia. A free Star Party is at dusk Jan. 21 at the National Radio Astronomy Observatory, Route 28-92, Greenbank. See the night sky on the Star Party Patio with optical telescopes. Cloudy skies will cancel night sky viewing. www.nrao.edu/VisitGB; 304-456-2150.