Ottawa (i/ˈɒtəwɑː/ or /ˈɒtəwə/) is the capital of Canada. It is the second largest city in Ontario and the fourth largest city in the country. The city is located on the south bank of the Ottawa River in the eastern portion of Southern Ontario. Ottawa borders Gatineau, Quebec, located on the north bank of the Ottawa River; together they form the National Capital Region (NCR).