Mosquito Island House, Stone house in St. George, United States.
Mosquito Island House is a stone residence on an island off St. George, built entirely from granite blocks fitted together without mortar. The building features a peaked roof with two dormers facing north, creating a sturdy structure suited to coastal conditions.
This house was built around 1780 and represents one of the earliest uses of granite block construction methods in America. The building appeared during a period when settlers were adapting stone building techniques to new coastal locations.
The house takes its name from the nearby island, reflecting how early settlers connected their homes to local geography. The structure shows how residents worked directly with materials found in their environment.
This house sits on private property located on an island that is only accessible by boat. Visitors should plan boat travel in advance and remember that weather conditions can make the island difficult to reach.
The granite blocks were extracted using quarrying methods that gradually fell out of practice after 1750, making this house particularly notable. These hand-driven techniques allowed builders to create precisely fitted walls without modern machinery.
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