In December 2001, a temporary viewing platform at Fulton Street, between Church Street and Broadway, was opened to the public. That month, the last standing perimeter columns from the North Tower and the last remaining portions of Building 6 were removed. Early estimates suggested that debris removal would take a year, but cleanup ended in May 2002, under budget and without a single serious injury. The Winter Garden Atrium was reopened to the public on September 17, 2002, the first major structure to be completely restored following the attacks.