An edition of Octagon Tower, Roosevelt Island (formerly Blackwell's Island and then Welfare Island), located approximately opposite East 79th Street, Borough of Manhattan (1976)

Octagon Tower, Roosevelt Island (formerly Blackwell's Island and then Welfare Island), located approximately opposite East 79th Street, Borough of Manhattan

completed in 1839, architect A.J. Davis; additions in 1847-48 and 1879

By New York (N.Y.). Landmarks Preservation Commission