at Toronto once the Saint Lawrence Seaway opened. However, the need for an extra harbour never materialized, and private boats are the only traffic usually found there now. Gaasyendietha Gaasyendietha is a legendary Loch Ness Monster-type creature and it is sometimes spotted in Lake Ontario and even within the Toronto Harbour. The story of Gaasyendietha is a Native Canadian myth from the Seneca tribe. History The original shoreline of the northern shore was low sandy bluffs, just south of today's Front Street. The mouth of the harbour pointed west. The islands used to be a low sandy peninsula forming the southern limit of the bay. The Scarborough Bluffs are much larger bluffs that lie approximately east of the harbour. Strong lake currents over time washed the sand eroded from the bluffs westwards to form the peninsula surrounding the bay. The eastern shore of the bay, approximately six kilometres east, was a marsh around the mouth of the Don River. In addition to the Don River, a number of smaller creeks flowed into the bay. The original site of the town of York had half a dozen short creeks that flowed through it. The town of York was established in 1793 in a ten-block rectangle bounded by the present Front Street, Berkeley, Duke (now Adelaide) and George Street alongside Taddle Creek. A government wharf was built to handle the transfer of ships' cargoes. A garrison at the entrance to the harbour, at the mouth of Garrison Creek, was established to guard the harbour along with a blockhouse on the island. In 1801, York became an official port-of-entry for immigrants and cargo. In 1808, the Gibraltar Point lighthouse was built on the island to guide ships. In the early 19th century, cargoes destined for York would be transferred at Montreal to smaller boats such as Durham boats and batteaux to traverse the rapids of the St. Lawrence River. Although not fully established by the War of 1812, the British colonial army was determined to set up boat-building for the defences at York. Fort York, on the north shore of the bay, near the mouth of Garrison Creek, guarded the harbour's mouth. An armed schooner was under construction at the York Naval Shipyards when the Americans attacked and the British burned the hull rather than surrender it. The invaders occupied Fort York, looted the town and destroyed military facilities. In 1825, the Lachine