Sisteron is a commune in the Alpes-de-Haute-Provence department in the Provence-Alpes-Côte d'Azur region in southeastern France.
Sisteron is situated on the banks of the River Durance just after the confluence of the rivers Buëch and Sasse. It is sometimes called the "Gateway to Provence" because it is in a narrow gap between two long mountain ridges.
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Sisteron, Provence-Alpes-Côte d'Azur, France