The Sasso Simone and Simoncello Interregional Natural Park is a 4791-hectare territory located in the provinces of Pesaro-Urbino and Rimini, on the border with the Homonymous Tuscan Nature Reserve of the municipality of Sestino (AR), located in the heart of Montefeltro, falls in the municipalities of Carpegna, Frontino, Montecopiolo, Pian di Meleto, Pennabilli and Pietrarubbia.

Of the castrum Bascii or Biscii, originally belonging to the Olive Trees of Pignano, there is news since 1145, mentioned among the lands confirmed by Pope Eugene III to the Camaldolese monastery of San Salvatore di Monte Acuto.

The Pieve di San Pietro dates back to 1100 and was erected on the ruins of an ancient Roman temple that has now disappeared. Its admirable façade is divided into large quadrangles. The portal has a hanging porch, surmounted by a small mullioned window. The interior has three naves divided by pillars with an elevated presbytery and a crypt. The church was included by the French actor Alain Delon in his film "The First Night of Quiet".