The chapel in the small lakeside resort community of Chascomús is at best underwhelming. Its whitewashed brick exterior is partly obstructed by a tangle of vines and bushes, and its dim, one-room interior is no more majestic than its facade. Wooden pews and an uneven dirt floor are scarcely illuminated by sunlight from a single window. The gray, cracked, dusty walls are adorned with crosses, photos, icons — things people leave to mark their pilgrimage. A low front altar is layered with thick candle wax, flowers and a pantheon of black saints, Madonnas and African deities like the sea goddess Yemanja of the Yoruba religion.

Despite its unkempt state, this chapel, the Capilla de los Negros, attracts a little over 11,000 tourists each year who come to see a church named for the freed slaves who built it in 1861.

The chapel is “where we can locate ourselves and point out the truth that we are here,” said Soledad Luis, an Afro-Argentine from the tourism office who led me through the space. She knows it well. It sits on a plot her great-grandfather helped secure, and her family still gathers there weekly for a meal.

Capilla de los Negros feels off the beaten path, but it is part of a list of slave sites in Argentina created in 2009 by Unesco. Its inclusion signals the growing consciousness of African heritage in Argentina, seemingly the most Europeanized country in South America.