Capital of the Pays de Buch, located in the department of Gironde in the heart of the Landes de Gascogne, La Teste is a town located south of the Arcachon basin, between Arcachon and Gujan-Mestras. With the waters of the basin to the north, it limits to the south the town of Arcachon, former hamlet of La Teste.
To the west of the town is the Dune du Pilat, which continues southward along the popular ocean beaches during the summer months.
To the south is the pond of Cazaux and Sanguinet, called Lake Cazaux, shared between the department of Gironde and the Landes.