The Matanuska Glacier is in the Matanuska Valley, north of Anchorage, and it's the only glacier in the United States that's accessible by car. The glacier is 43 kilometers long and even from afar it's gorgeous. Up close it's great. From the parking lot to the glacier it's a little bit of a walk, but it's worth it. You have to be careful because the glacier ice is very hard and slippery.