Wall Street's turbulent history
Vladislav Prokopov of Russia, left, a student at Mansfield University in Pennsylvania takes a picture while standing in front of the former U.S. Custom House. The tour helps put recent financial events into perspective. "Wall Street always comes back - every time there's been a crash, there's been a rebound," says tour guide James Kaplan. "In order to have a rise, you have to have a fall." Craig Ruttle / Associated Press
