The former First Free Congregational Church, with its simple, rectangular shape and temple front, is one of the few remaining examples of the vernacular Greek Revival building popular in the mid-nineteenth-century. The “Free” in the name refers to the policy of not charging a rental fee for its pews. The building has changed hands many times, and by 1854 it housed the oldest African American congregation in Brooklyn, which used the basement to hide escaping slaves. It is now the student center for the Polytechnic Institute of New York University.