The Marquis' Arch, also known as the Great Door, was the main passageway into the village until 1780. This opened on to a smaller door, which no long exists, which in turn opened on to S. Maria delle Grazie square. A drawbridge constructed outside the Great Door and over a gorge, allowed access to the village. On the door one can still see the holes that operated the chains used to open and close the drawbridge. In the vaults there were three trap doors, now walled up, through which boiling oil was poured or from which stones were hurled at any assailants threatening harm to the villagers. On the façade of the arch's vault a painting by an unknown artist is visible. Dating back to the late fifteenth century, it depicts the crucifixion of Christ. The arch is surmounted by a chapel dedicated to the Madonna also built in mid-1700.

Passing through the arch we reach the Miani Perotti square. Here is the monumental façade of the Marquis Palace, town house of lords. The origins of the building date back to 400 AD, after which there were significant expansions. The ground floor is characterized by a multitude of doors and pilasters ending in Corinthian style capitals. In the inner courtyard there is an elegant eighteenth-century loggia with 3 arches per floor and a typical staircase leading to the first floor. In 1850, the Miani family commissioned the expansion of the architectural complex, taking in part of the city walls and sacrificing the hanging gardens. In the nineteenth century the façade was built in piazza Vittorio Emanuele. The ground floor, the town hall was established. As a reminder of the past one can still see the iron ring hanging from the palace façade, which supported the pillory to which the condemned were tied.