A hat, a backpack and a bouquet of purple flowers were strewn across the scene of the fatal crash in Lower Manhattan Wednesday morning.
The New York Knicks celebrated their first NBA championship in 53 years with a ticker-tape parade through Manhattan's "Canyon of Heroes," drawing thousands of fans dressed in the team's blue and orange.
For the first time, it's open to the public and you can visit for free.
A total of 1,250 participants started in the basement of One World Trade Center and ran up 102 floors. The fastest climber finished in about 16 minutes.
Ground Zero recovery work ended on May 30, 2002, months after the September 11, 2011 terror attacks.
The exhibit is giving a rare look at original documents---some dating back nearly 250 years---just ahead of the country's historic anniversary.