Moose Peak Light On the east point of Mistake Island, President John Quincy Adams authorized this lighthouse in 1825. Completed in 1827, it held a second order Fresnel lens which was installed in 1856. In 1887 the present 57 foot brick tower was built, and in 1901 the keeper's house was replaced and a walkway was built to connect the house to the tower. In 1912 a fog signal was installed as this was known as one of the foggiest stations on the Maine Coast, with fog shrouding the island 20% of the time. 1972 saw the automation of the light and the Fresnel lens removed. The Green Berets blew the keeper's house up in 1982 as part of a training exercise.