Directions Plane - Washington, D.C is serviced by three airports Reagan National, Dulles, and Baltimore-Washington International (BWI). All the airports have limo and taxi service availble to downtown Washington. BWI has rail service available and Reagan National has Metro rail service.
Car - The Old Post Office is located at the southeast corner of Pennsylvania Avenue and 12th Street, N.W. Public parking spaces are limited in Washington, D.C. Limited on-street parking is available during non-rush times (9:30 a.m. -4:00 p.m.) on weekdays, and all day on weekends and holidays. Parking may be restricted during special events. Several commercial parking lots are located near the park.
Public Transportation - Metro busses run regularly along Pennsylvania Avenue and 12th Street. Metro Rail's Federal Triangle Station (orange and blue lines) is directly across 12th street from the Old Post Office. Tour bus parking is primarily available along Ohio Drive, S.W., near the FDR, Lincoln and Jefferson Memorial