North Side of the Exchange ID: 263 | This file appears in: Old Exchange and Provost Dungeon, 122 East Bay Street The north side of the Old Exchange Building. Prior to the ordinance of 1856, this space was an open lot where slave auctions occurred. Photograph courtesy of Jenn Curtis. Download Original File "North Side of the Exchange" appears in: Old Exchange and Provost Dungeon, 122 East Bay Street