President Obama, President Bush, and their wives look over the North Memorial Pool at Ground Zero
Names of the victims made up American flags in Battery Park in Lower Manhattan
In St. Louis 3,000 flags were set up in remembrance of those who died in the attacks
Firefighters in Wasau, Wisconsin honored the firefighters that died in the terrorist attacks by climbing 110 stories of stairs to equal the number of stories in each of the World Trade Centers.
photos courtesy of USA Today