Hamilton Heights - Elegant 3-Bedroom, 2-Bath Co-op in Historic Sugar Hill Landmark Experience a rare chance to own a piece of Harlem’s storied past at The Garrison Apartments, a landmark prewar cooperative in the heart of Hamilton Heights’ Sugar Hill Historic District. Built in 1910 and a cooperative since 1929, The Garrison stands at the corner of Convent Avenue and West 149th Street, within a ...