Bar Harbor is a town on Mount Desert Island in Hancock County, Maine, United States. As of the 2010 census, its population is 5,235. Bar Harbor is a popular tourist destination in the Down East region of Maine, and home to the College of the Atlantic, Jackson Laboratory and Mount Desert Island Biological Laboratory (Salisbury Cove village). Prior to a catastrophic 1947 fire the town was a famous summer colony for the super-affluent elite. Bar Harbor is home to the largest parts of Acadia National Park, including Cadillac Mountain, the highest point within 25 miles (40 km) of the coastline of the Eastern United States. The town is served by the Hancock County-Bar Harbor Airport which has flights on Cape Air and PenAir to Boston.