grand canal
suez canal
Lake Albert located in Australia is a navigable waterway. It is 2,075 square miles and 110 miles long. It is used a means of transportation, but is not a main travel route.
The Long Island Sound is approximately 1,320 square miles in size. It is a tidal estuary located between Connecticut and Long Island, New York, and is an important waterway for shipping, recreation, and marine life.
The Great Wall
The river is 780 km (485 miles) long, France's second-longest (after the Loire).
The Niagara river is the (short; about 35 miles long) waterway that connects Lake Erie with Lake Ontario, so it starts at Lake Erie.
The Atlantic Intracoastal Waterway is a nearly 500 kilometers long waterway in the United States. It runs from Manasquan River, located in New Jersey, all the way to Brownsville, located in Texas.
63 km (39 mi)
The river that flows through Austria and comes out in the Black Sea is the Danube River. It is 1,771 miles long and is the most significant waterway on the continent.
The great wall of China.
Great wall of China!