A group of speakers from around the world -- including former Pres. Bill Clinton-- were in town for Chicago's "Ideas Week." They met with the best thinkers in Chicago to try and come up with innovations and ideas for the future.
On Monday, the former mayor took the group on a tour of Millennium Park.
On Monday night, Ideas Week was scheduled to host a panel of current mayors including Rahm Emanuel, New York's Michael Bloomberg and Atlanta's Kasim Reed.