Going uphill from Castelnuovo and following the road climbing along the valley of the river Serchio, we arrive at Villetta. This town is famous for the highest stone railway bridge in Europe, which gets over the river just at a short distance from the church of Sambuca.

This is a town, part of the municipality of S. Romano Garfagnana, where we can find the beautiful church of S. Pantaleone, recently renovated, standing on a rocky spur that can be reached only from a steep road. This church, originally built by the Longobards, was rebuilt in 1460 with subsequent interventions in 1604. Lately the "Fondazione Ricci", together with the villagers of Sambuca and the municipal government, has provided financial support for the renovation of both the interior and exterior of the church.

Admirable is also the 15th century fortress (Rocca), with its rounded embattled towers, standing in the centre of Camporgiano. The Rocca, surrounded by mighty walls, was built on a cliff over the river Serchio.

Inside the fortress we can find a museum of Renaissance ceramics. The museum is in the central embattled tower of the Rocca Estense. A visit should be paid to the beautiful collection of Renaissance majolicaware. Finally we'd like to mention two more towns: Sillano (rising at the fountainhead of the river Serchio) and Piazza al Serchio (standing right at the point where the roads connecting Garfagnana, Emilia and Lunigiana join).