Timeline
1627: The first boat of enslaved Africans lands in New Amsterdam.
1658: Free Africans and slaves build the village of Nieuw Haarlem, a black farming community.
1660: Reformed Low Dutch Church, the first church in Harlem, is founded and burial ground created.
1827: Emancipation in New York, but freed slaves were often kidnapped and taken to New Jersey, where slavery was still legal.
1991: While digging the foundation for a new federal courthouse, contractors uncover a six-acre African burial ground at Duane and Elk streets. Thousands are buried there. A visitors center at 290 Broadway opens Feb. 27.