U.S. Department of Agriculture South Building

“Seven miles of corridors?” a woman muttered, adjusting her sunglasses. “That’s practically a marathon!” Right here, before us, stands the U.S. Department of Agriculture South Building. A behemoth of an office building. Completed in 1936, it was briefly the world’s largest, overshadowed only later by the Pentagon. The U.S. Department of Agriculture South Building isn’t just big, it’s a historical document. It speaks of a time when the Department of Agriculture was exploding in size, fueled by the demands of Depression-era programs. The original Administration Building couldn’t hold all the new staff. So, they built this giant, intending it as a subordinate structure, a practical, extensible space to house labs and offices. Designed by Louis A. Simon, the Supervising Architect of the Treasury, the U.S. Department of Agriculture South Building showcases the Stripped Classic style. It’s classical, but streamlined, echoing the austerity of the times. Notice the clever use of materials. Limestone on the 12th and 14th street sides, visible from the National Mall. More economical brick on the other sides. And those animal reliefs between the windows? They’re the work of sculptor Edwin Morris. Inside, the U.S. Department of Agriculture South Building was a marvel of efficiency. A rigid grid of corridors maximizing space. Only the auditorium and library dared to break the pattern. Imagine the hustle and bustle of scientists and clerks rushing through those seven miles of halls. A pneumatic tube system whisked mail from floor to floor. Today, the labs are gone, moved to Maryland. The tubes are silent. But the U.S. Department of Agriculture South Building still stands. A testament to a time of growth, practicality, and a touch of architectural restraint. It makes you wonder what stories these walls could tell.