Floating Gardens of Xochimilco

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Picture of a boat known as "Trajinera" taken in a water channel amid the floating gardens of Xochimilco, a UNESCO World Heritage Site, during a symposium on biodiversity and gastronomy, in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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Picture of two clay vases used to cook, taken during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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View of a water channel amid the floating gardens of Xochimilco, a UNESCO World Heritage Site, taken during a symposium on biodiversity and gastronomy, in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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A man in a canoe is seen in a water channel amid the floating gardens of Xochimilco, a UNESCO World Heritage Site, during a symposium on biodiversity and gastronomy, in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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Picture of a boat known as "Trajinera" taken in a water channel amid the floating gardens of Xochimilco, a UNESCO World Heritage Site, during a symposium on biodiversity and gastronomy, in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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Venezuelan chef Maria Fernanda Di Giacobbe poses for pictures during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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French chef Michel Bras poses for pictures during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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Peruvian chef Gaston Acurio poses for pictures during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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Japanese chef Yoshihiro Narisawa poses for pictures during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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Mexican writer Laura Esquivel poses for pictures during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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French chef Michel Bras poses for pictures during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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Venezuelan chef Maria Fernanda Di Giacobbe cooks during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA

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French chef Michel Bras poses for pictures during a symposium on biodiversity and gastronomy, amid the floating gardens of Xochimilco, a UNESCO World Heritage Site in Mexico City on July 18, 2017. / AFP / Alfredo ESTRELLA