Once the city’s central post office, this grand Romanesque Revival structure now serves as the Waldorf Astoria Washington D.C.—a luxury hotel steeped in architectural heritage. Built between 1892 and 1899 and located at 1100 Pennsylvania Avenue NW, the building was originally the Old Post Office Pavilion and is one of the few late 19th-century federal buildings to survive in the area.
This photograph captures the front portico entrance with its massive central arch, heavy rusticated stone, and richly detailed carvings—all hallmarks of the Richardsonian Romanesque style. Architect Willoughby J. Edbrooke designed the structure while serving as Supervising Architect of the U.S. Treasury, favoring rounded arches, fortress-like massing, and medieval references that evoke strength and permanence.
Above the main entry is a contemporary gold Waldorf Astoria sign, while the flanking arched windows now house the Peacock Alley restaurant and the Waldorf Astoria Spa. These adaptations highlight a thoughtful preservation approach: retaining the building’s historic fabric while accommodating modern luxury.
After narrowly avoiding demolition in the mid-20th century, the Old Post Office was repurposed in the 1980s and underwent another major transformation in the 2010s when it was converted into a hotel. Through each chapter, its architectural integrity has been largely maintained, making it a rare and prominent example of Romanesque civic design in Washington, D.C.
HABS Architectural Survey Standard:
Documented according to standards of the Historic American Buildings Survey (HABS):
Structure Name: Old Post Office
Location: 1100 Pennsylvania Avenue NW, Washington, D.C.
Style: Richardsonian Romanesque
Date of Construction: 1892–1899
Architect: Willoughby J. Edbrooke
HABS Reference Number: DC-275
