At giant warehouse in Clay and across U.S., Amazon remakes how it ships millions of little things Today 6:00 AM The Amazon distribution center under construction in Clay will be one of the largest warehouses in the world when it opens in the fall of 2021.Amazon Facebook Share Clay, N.Y. – When plans emerged in 2019 for a mammoth distribution center in Clay, it was revolutionary: a unique 3.8-million-square-foot, five-story structure to handle the booming sales of Amazon. Over time, Amazon has announced plans for nearly identical buildings in at least 11 other towns across America: Pflugerville, Texas; Detroit; Mount Juliet, Tennessee; and others. New ones are made public almost every month. In just the past few days, Amazon disclosed plans to build similar buildings in Shreveport, Louisiana, and Savannah, Georgia.