[3] Part of the canton of the Fiumalto d'Ampugnani, La Porta on its spur of Monte San Petrone is sheltered among the chestnut woodlands on the slopes.

This most remote and isolated area of north-western Corsica retains the last extensive stands of the old-growth chestnut forest that gave its name to the Castagniccia region (castagna, "chestnut"); the depopulation it has experienced since ca 1870, to 196 persons in 1999, have had the effect of preserving the traditional landscape.

The church of Saint Jean Baptiste and its ambitious campanile are more than local landmarks, the pride of the village and the most famous[7] masterpieces of the late Baroque architecture of Corsica.

The church was built from 1680 and provided with a facade designed by the Milanese architect Domenico Baïna, which was completed about 1707.

Baïna also designed the sumptuous campanile that rises in five stages to 45 meters, and is visible far and wide, finished about 1720.