The archaeological area in the square “Piazza Duomo” displays significant remains of Feltre in Roman and Medieval times. The Roman phase of this settlement is testified by the remains of part of the urban district. Particularly, it is possible to see some private buildings, of which some had inner workshops (B and C) and others (D) had heating system. These buildings were accessible through a paved road (E) leading to the top of the hill (F); another paved road led south (G). Buildings B and C were built against the natural hill slope and were articulated on two floors. Building D is represented by a big rectangular-shaped room with hypocaust heating system running under the pavement.
At the centre of the archaeological site it is possible to see the remains of a big building with three rooms paved in marble (Latin: opus sectile) and mosaic (A), that has been interpreted as the office of some professional associations (Latin: “schola”) such as those of blacksmiths, carpenters and rag dealers.
The Medieval phase of Feltre is represented by the remains of religious structures (H, I). Building H is narrow and long and dates back to VIII-IX century A.D. Because of its architectural typology, quality and location near the cathedral it is believed that this building could have been connected to the most ancient local episcopacy. East to it there is the building I, the baptistery, which dates back to XI-XII centuries A.D. it has circular plan with two concentric rings: the proportions among the various structural components suggest that the baptistry might have had an upper floor with gallery.