For centuries, people have made their way to the summit of Cadillac Mountain on foot, by rail, and by road. In the late 1800s, after noticing increasing numbers of vacationing rusticators, entrepreneur Frank Clergue created an ambitious three-tier excursion in which carriages carried passengers from Bar Harbor to Eagle Lake, where they boarded a steamboat to a cog railroad that took them up the mountain’s steep western slope; the trip lasted 90 minutes. After 10 years, the railway closed, largely because competitors had opened a new carriage route, which was later greatly improved for automobiles in the 1920s and 1930s.