Kingston is a Canadian city in Eastern Ontario located where the St. Lawrence River flows out of Lake Ontario, and at the mouth of the Cataraqui River (south end of the Rideau Canal). It is located midway between Toronto and Montreal. It was named the first capital of the Province of Canada on February 10, 1841. Kingston is nicknamed the "Limestone City" because of the many heritage buildings constructed using local limestone. It was also recognized as one of the "best places to live and work in Canada for young professionals".