Goat Island Light Goat Island Light was established in 1834 to help guide mariners into Cape Porpoise. The keeper's house and 20 foot tower were rebuilt in 1860,and a fifth order Fresnel lens was installed. Between 1880 and 1890 the present 25 foot brick tower was built and it was connected to the keeper's house by a covered walkway. In 1905 the boathouse was added and the oil house in 1907. The last Maine lighthouse to be manned Goat Island was automated in 1990, and the Fresnel lens replaced. When former Presdent George Bush was in residence at Walker Point in Kennebunkport the station was used as a security post.