Several of the older buildings were lost to fire during this time, including the first Grandstand and the Crystal Palace (known as the Transportation Building) in 1906. In 1910, the Dufferin Gates were replaced with a more elaborate arch and out-buildings on each side. During World War I, the Government Building was used as a barracks for soldiers, and a tent camp was set up on the site of the current Ontario Government Building (now Liberty Grand). The Dufferin Gates were patrolled by soldiers.