Bass Harbor Head Light Station is an active lighthouse on the rocky southwest coast of Mount Desert Island, marking the entrance to Bass Harbor and Blue Hill Bay. It’s the only Acadia lighthouse most visitors can easily reach by car, and one of the island’s best-known landmarks. Make the stop for the coastal views and the working station, not an interior tour: the tower is closed to visitors. You can see it from an accessible overlook, walk up the steep paved approach, or descend toward the shore for the classic low-angle view.