The National Park Service provides interpretive programming within the Old Post Office Tower under an agreement with the building's owner, the General Services Administration.
Hours of Operation: 9 am - 5 pm daily (last entry is at 4:30 pm), except Thanksgiving and Christmas.
(NOTE - The observation deck will be closed on Monday, May 28 from 10:30 a.m. to 12:30 p.m. for the ringing of the Congress Bells in honor of Memorial Day.)
For more information on the building click the link to the GSA Old Post Office Page
Old Post Office Tower
Last updated: May 16, 2018