While the warmer months have traditionally been the peninsula’s “high season,” winter carnivals or ski and dogsled races are now attracting crowds all year. A four-season Upper Peninsula Travel Planner is available through the Upper Peninsula Travel & Recreation Association (1-800-562-7134). An outfit named Michigan Magic (1-800-468-6542) produces a series of half-hour videos, designed to introduce visitors to the area’s many attractions. We were comfortable at the Best Western Colonial Inn, three miles south of the town center. But for those who can’t get enough of the locks, many motels closer to town offer full views of their activity day and night.