Kingston is a Canadian city on Lake Ontario, at the mouth of the Cataraqui and St. Lawrence rivers. It’s known as the “Limestone City“ for its grand 19th-century buildings, including the lakeside Kingston City Hall. The grand house and gardens of the Bellevue House National Historic Site commemorate Canada’s first prime minister, Sir John A. Macdonald. Fort Henry, built in the 1800s, holds military demonstrations.