House Island

House Island is a private island in Portland Harbor in Casco Bay, Maine, United States. It is part of the City of Portland. The island is accessible only by boat. Public access is prohibited, except for an on-request tour sanctioned by the island's owners. House Island includes three buildings on the east side and Fort Scammell on the west side. The buildings are used as summer residences. The island's name derives from the site of an early European house, believed that built by Capt. Christopher Levett, an English explorer of the region.[1][2]
Henry A. S. Dearborn, an officer of the Massachusetts Militia and a future general, built Fort Scammell on the island in 1808 as part of the national second system of fortifications. It was named after Alexander Scammell, Adjutant-General of the Continental Army during the American Revolutionary War, who was killed in action during the Battle of Yorktown. The fort was designed for harbor defense, with cannon batteries designed to protect the main shipping channel into Portland harbor, along with Fort Preble. The spelling of the fort's name varies among references. The fort was made of stone, brick, and earth, and initially mounted fifteen guns and a 10-inch mortar. The Secretary of War's report on fortifications for 1811 describes Fort Scammell as "a circular battery of masonry with circular flanks, mounting fifteen heavy guns, is covered in the rear with a wooden blockhouse, mounting six guns...". Typical weapons of the period were 24-pounder or 32-pounder smoothbore cannon.

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