During World War I and II Dorset, located on the English Channel, was both a target and important to the Royal Navy. The large Portland Harbour, built at the end of the 19th century and protected by Nothe Fort and the Verne Citadel, was for many years, including during the wars, one of the largest Royal Navy bases. British, American and Canadian ships gathered in the harbour and nearby in Weymouth bay before the D-Day landings. Training for the landings also took place in Dorset, at the long sandy beach at Studland. Portland Harbour continued to be used as a Royal Navy and NATO training base until the 1990s. It is now a civilian port and recreation area which will be used for the sailing events in the 2012 Olympic Games.