In 2002 the National Institute Netherlands Slavery Heritage (Nationaal Instituut Nederlands Slavernijverleden en Erfenis, NiNsee) was established. NinSee is active in research, education and
public events, including the annual Tula commemoration on August 17 in the Muiderkerk. The goal of NiNsee is to improve knowledge and a realistic picture of Dutch past of slavery and it's
heritage, from different points of view. NiNsee is located in the Amsterdam City Archive on Vijzelgracht 32.