Washington is a state in the Pacific Northwest region of the United States. It is often referred to as Washington state to distinguish it from the national capital; both are named after George Washington, a U.S. Founding Father and the first U.S. president. Washington borders the Pacific Ocean to the west, Oregon to the south, and Idaho to the east; it shares an international border with the Canadian province of British Columbia to the north. Olympia is the state capital, and the state's most populous city is Seattle.