What two cities are home to the port of entry situated at the north end of the Port Subdivision railroad line?
Port Subdivision: The Port Subdivision is a railroad line owned by CSX Transportation in the U.S. state of New York. Port Subdivision:  At its south end, the Port Subdivision junctions with the Castleton Subdivision and River Subdivision; its north end is at the Port of Albany, served by the Albany Port Railroad. Port of Albany–Rensselaer: The Port of Albany–Rensselaer, widely known as the Port of Albany, is a port of entry in the United States with facilities on both sides of the Hudson River in Albany and Rensselaer, New York.
Albany and Rensselaer, New York