Rapids north of the city made St. Louis the northernmost navigable port for many large boats.
Tour the state's northernmost port and, if the season's right, see salmon swimming up stream.
It is the northernmost port of Kefalonia, a short distance from Ithaca.
Dikson is the northernmost port in Russia and one of the northernmost settlements in the world.
The town has its own bus line, and is the northernmost year-round ice-free port in the country, a shipping base for western and northwestern Greenland.
Valdez is the northernmost port in North America that is ice-free year-round.
Ringed by soaring snow-capped mountains, Valdez is Alaska's rugged, northernmost port.
The Andrade-Los Algodones border crossing is also Mexico's northernmost port of entry.
Quincy is home to the northernmost port on the Mississippi River for 12-month barge traffic.
The Port of Bethel is the northernmost medium-draft port in the United States.