The Atrium was severely damaged in the September 11, 2001 attacks as almost all the glass panes were blown out by the dust clouds and debris caused by the collapse of the World Trade Center, but was rebuilt during the first year of the Financial Center's recovery. Reconstruction of the Winter Garden required 2,000 panes of glass, 60,000 square feet (5,400 m²) of marble flooring and stairs, and sixteen Washingtonia robusta palm trees at a cost of $50 million. Reopened on September 17, 2002, the Winter Garden was the first major structure to be completely restored following the attacks. President George W. Bush was present at the reopening ceremony.