Ariel Rios Building
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The Ariel Rios Building is across 12th Street from the Old Post Office, in the Federal Triangle in Washington, D.C.. The Rios Building is now the headquarters of the U.S. Environmental Protection Agency.
In 1914, the District of Columbia Mail Depot was moved to a larger building constructed next to Union Station. Although only 15 years old, the building at 12th Street and Pennsylvania Avenue was dubbed the "old" post office. In the 1920s, Treasury Secretary Andrew Mellon's building commission developed the Federal Triangle and actively sought the Old Post Office's demolition, as it did not conform to the guidelines of the building commission.
The Postmaster General moved to a newly constructed office building, now called the Ariel Rios Building directly across 12th Street in 1934. The building was designed according to the plans promulgated by Andrew Mellon's building commission.
The Rios Building has been refurbished with the architectural details of the hallways preserved in the style of the 1920's and 1930's.
 Mural: Postal Workers sorting mail |
 Mural: Postal Workers moving mail sacks |
 Spiral stairs. |
 Inlaid Floor. |
