Cook County is home to one of the darkest skies in the world. Every year, explorers, adventurers, artists and photographers from around the world travel to Cook County to experience the northern lights and night sky. The Boundary Waters Canoe Area Wilderness (BWCAW) has been named as one of only 17 certified International Dark Sky Sanctuaries in the world! And at over a million acres, it is the largest. Help us to celebrate our world-class dark sky at the fifth Dark Sky Festival!