Ontario
Ontario also has the second largest land area, with 1,076,395 km²; only Quebec is larger by size. (Nunavut and Northwest Territories are also larger, but are called territories and not provinces). The province has one of the longest borders with the United States and there are several border crossings including the one at Niagara Falls. Along this border are 4 large lakes called Lake Ontario, Lake Erie, Lake Huron, and Lake Superior. They each are partly in Ontario and partly in the United States, and the border runs through them, but not Lake Michigan, which is entirely in the United States. These five lakes are together are called the Great Lakes.