The Adirondack is a scenic Amtrak route that passes through its namesake mountains in Upstate New York on a journey from New York City to Montreal. In addition to winding through the forested peaks of the Adirondacks, the train passes through the famous Hudson River Valley during its 11-hour, 380-mile journey. This is one of the few trains in the U.S. that crosses an international border. With more than 100,000 riders per year, the Adirondack is a popular train for practical reasons (it connects the financial hubs of the Eastern U.S. and Quebec). But, because its route runs through some of the best scenery that the region has to offer, it is worthwhile to travel purely for sightseeing as well. Also, because both New York and Montreal have great subway systems, it is possible for Big Apple-to-Montreal travelers to get from door to door using nothing but trains.