Longfellow-Evangeline State Historic Site explores the cultural interplay among the diverse peoples along the famed Bayou Teche. Acadians and Creoles, Indians and Africans, Frenchmen and Spaniards, slaves and free people of color-all contributed to the historical tradition of cultural diversity in the Teche region. French became the predominant language, and it remains very strong in the region today.

Henry Wadsworth Longfellow's 1847 epic poem Evangeline made people around the world more aware of the 1755 expulsion of the Acadians from Nova Scotia and their subsequent arrival in Louisiana. In this area, the story was also made popular by a local novel based on Longfellow's poem, Acadian Reminiscences: The True Story of Evangeline, written by Judge Felix Voorhies in 1907.