The East Harlem Historic District extends roughly from 111th to 120th streets, Park Avenue to the East River. The district comprises 820 buildings, 677 of which are contributing—meeting the criteria of age (1865-1965), architectural integrity, and significance to the history of the neighborhood. Landmark East Harlem worked for more than three years to secure the district’s listing on the State and National Registers of Historic Places in 2018.