The church of Negrentino, also known as San Carlo, is of enchanting Romanesque architectural beauty. Situated in a unique and isolated location, it is accessible just a few steps from Leontica by crossing a small suspension bridge. Inside the church, you can admire several frescoes, one of which dates back to the mid 11th century (1050).
You can access the church by collecting the keys from the Infopoint of the Blenio Valley Tourist Office in Olivone.