Immigrant Heritage week is an annual celebration of the unique contributions and diverse cultures of immigrant communities in New York City. It is a chance to recognize the many immigrants, past and present, who have contributed their talents, skills and hard work to our city and country. Immigrant Heritage Week also aims to build cross-cultural understanding between native New Yorkers and immigrant communities. It highlights what makes our city one of the most vibrant and inclusive cities in the world. Immigrant Heritage Week recognizes the day on April 17, 1907 when more immigrants entered the U.S. through Ellis Island than on any other day in history.