At 6:31 p.m., TBD-TV anchor Morris Jones will throw a giant switch, turning on the rooftop LED lights that give the Rosslyn skyline a festive glow this time of year. Rosslyn building owners started decorating their rooftops for the inaugural Light Up Rosslyn event in 1993.
Before the switch is thrown, there will be free food, drinks and music for anyone who wants to stop by. Santa Fe Cafe is providing chili and hot cocoa, while Monday Properties is providing cookies and hot cider. The Potomac Harmony Chorus and Beltway Brass will perform.