Pembina State Museum and Tower, North Dakota

A local museum, operated by the North Dakota State Historical Society, notable especially for its tall observation tower overlooking the Red River as it flows into Canada, and the border crossing a couple miles north. Pembina is the busiest crossing in the state, with more than a million cars passing through here every year. There are 17 more crossings along the 310 miles of the rural border in North Dakota, and only two others that are open 24/7. Most of the crossings are along farm roads and small highways with 15 or 20 miles between them.