The 1878 Provincial Agricultural Fair was held on the grounds. When Ottawa was chosen to host the 1879 fair, Toronto decided to hold its own fair. First called the Toronto Industrial Exhibition, it was held in the Crystal Palace and temporary buildings. At first, the eastern part of the site was still reserved for military purposes, the exhibition held on the western part of the reserve, where many of the oldest exhibit buildings are located. As time went by, more and more of the reserve was taken over for exhibition purposes, including a horse track and grandstand, and exhibit buildings.