From here once again you cross the basin reaching Porto Valtravaglia in about twenty minutes, locality that inherited its name from the surrounding territory, with summit in Germignaga, it stretches out to the west to Castelveccana, to the south towards the mountains Cuvignone, Colonna, Nudo and San Martino, and to the east towards the valley of the Margorabbia stream. Tourist center with a small lake-front, Porto preserves in the area going towards the mountains the Romanesque style Parrocchiale dell'Assunta, later adapted in the 16th cent., and the 17th Oratorio of San Rocco. Arriving in this locality, is visible on the right the promontory Rocca di Calde', so called because of the ancient fortress that rises there that was restored by Ottone Visconti, and then dismantled by the Swiss in 1513.