On Lake Maggiore and Lake Mergozzo there are evident signs of Romanesque architecture between plain and valley. In the medieval village of Mergozzo there is the Oratory of Santa Marta (beginning of the 9-10th century) and in the nearby hamlet of Bracchio there are the churches of Santa Maria and Assunta. The church of San Giovanni Battista is on white granite and comes from the nearby quarry of Montorfano. Mentioned for the first time in a parchment of 885, the current complex dates back to the 11th century and is one of the most valuable and best preserved of the Ossola Valley. On Lake Maggiore, in Verbania you can visit the church of San Remigio on the promontory in the green of the Castagnola di Pallanza and the church of San Pietro in Trobasso. In Gravellona Toce, the church of San Mauruzio has preserved the original form of local stone blocks dating back to 11th century. On a rocky buttress that overlooks the lake, the upper village of Carmine, wedged between Cannero and Cannobio, is the best-preserved medieval core in Verbano. Reachable only on foot, it is located around the church of San Gottardo (14th century) with a graceful late-Romanesque bell tower. Going up to Villadossola, at the entrance of the Antrona Valley, on the banks of the stream you can see the church of San Bartolomeo (10-11th century).
