Roman Forum Under today’s Piazza del Comune. dominated by the Roman Temple of Minerva (1st century BC.). you can visit the ancient Roman Forum. which was discovered during excavations in 1836. Entrance to Assisi Underground is from via Portica. through the Romanesque crypt of the former church of San Nicolò “De platea.” which displays sarcophagi. capitals and inscriptions from Assisi and the nearby area. The remains of the Forum include the base of the temple with entrance doors to the vestibule. a monumental cistern. a podium with seats for magistrates and a small tetrastyle temple dedicated to Castor and Pollux. In a second hall there are three well preserved marble statues which were found in the Forum.