The building is the oldest city hall in the United States that still houses its original governmental functions, such as the office of the Mayor of New York City and the chambers of the New York City Council.
Bangunan ini merupakan balai kota tertua di Amerika Serikat yang masih memiliki fungsi-fungsi asli pemerintahan seperti kantor Wali kota New York City dan kamar Dewan New York City.