The history of signaling on Signal Hill embodies the fundamentally modern transition from visual signals to wireless ones. Signal Hill is the site of the Cabot Tower, built between 1898 and 1900 to continue the port signaling service which originated in 1704; flag signaling continued from the deck of Cabot Tower until 1958. On 12 December 1901 Guglielmo Marconi received the first transoceanic wireless signal in a former military barracks on Signal Hill. From 1933 to 1949 the Canadian Marconi Co. operated a wireless station on the second floor of Cabot Tower; from 1949 until 1960, the Canadian Department of Transport operated the station.