Harbor Defenses of New York later became known as the first system of US seacoast fortifications. In New York this was initially limited to the large Fort Jay on Governors Island, along with some small batteries on Oyster Island (later Ellis Island) and Bedloe's Island (later Liberty Island). These were simple earthworks at the time. Congress contributed to building Fort Jay in 1797, and in 1800 the state sold the fort, Governors Island, and Bedloe's Island to the federal government for one dollar. Oyster Island was similarly transferred in 1808. The federal government commenced building improved stone forts at all three locations. In June 1807,
Grenadier Island, New York northern shore. The Grenadier Island Schoolhouse is located in the middle of the island. It has a single room with an outhouse situated behind it. In the early 20th century it had around 13 students. It was added to the National Register of Historic Places in 2012. The Humphrey farm house, also known as the "Carbide House", was a two-story home with a basement and an attic. The house has been abandoned for many decades, and has been gradually falling in upon itself for many years (as of 2014). Grenadier Island, New York Grenadier Island is a island located out