Annexation to the department of Haute-Garonne Historical milestone · Bossòst, Val d'Aran, Lleida Image of Bossòst, not of the place itself. During the Napoleonic occupation the valley was incorporated into the French department of Haute-Garonne and administered from France. The defeat of Napoleon returned it to Spain in 1814, in a context that already announced the end of Aranese fiscal autonomy. 1808-1814 Photo: Isidre blanc (CC BY-SA 4.0) What to see and do in Bossòst