The reunion hotel is in the vicinity of these stations: Archives, Gallery Place, Judiciary Square, and Union Station. Note that if you board the yellow line at Reagan National Airport, you can get off at Archives, from which it's a 15-minute walk to the hotel, or at the next stop, Gallery Place, from which it's a 16-minute walk to the hotel. To get to Judicial or Union Station, you'd have to switch to the Red Line at Gallery Place station.