The Roman town of Suasa (3rd century B.C.-4th century A.D.) extends (between the two necropolises to the south and north) along the sides of the main basalt paved road, with the forum on the west side and a large residential quarter to the east (with the Domus dei Coiedii, the House of the First Style, the Edificio di Oceano). The theatre and amphitheatre are situated up hill from the residential area. The rest of the urban layout (walls, roads and other buildings) can be partially reconstructed from the results of recent geophysical surveys and aerial photographs.

The 2010 research concentrated on an area corresponding to the tabernae F 38-40 in the imperial forum (1st century A.D.). A sacred context of Republican date (circa 2nd-1st century B.C.) had previously come to light below these structures. The complex comprised a circular temple on a podium to the west and a second rectangular temple on a podium a little further to the east, each with an altar in front. Still further east there was a slightly later building (1st century B.C.) with a terracotta floor. The new excavations investigated the interior of the rectangular podium (cut and overlaid by the foundations of F39). A thick deposit of successive gravel dumps (over 50 cm) was removed which in turn covered several walls built with intact tiles bonded with clay and cobbles (only partly uncovered in 2009). These walls had been partially robbed at the moment of the forum’s construction. These structures, first built up and then gravelled, delimited a central room open towards the south. The two main structures (external podium and internal room) were connected by short dividing walls (two on each side, except for the front). At present it appears that the structure inside the podium had never been practicable but was covered with gravel from the beginning. However, the opening at the front of the room, on the same axis as the _podium_’s façade, suggests a threshold and thus a room which could be entered. The floor level inside this room could be either a level relating to the building site or the remains of a floor. Several questions remain to be answered. The main hypothesis, at present without the support of archaeological evidence, suggests that there was a stairway leading up to the podium that was later removed, thus leaving the space that appears as a central opening. The podium, with moulded open façade (perhaps from the beginning for a ramp) was built with masonry footings and mud brick walls faced with red plaster. The foundation trenches of the forum produced elements that probably belonged to the temple such as white grooved stucco (from the columns) and patches of opus signinum paving.

Outside the podium (in correspondence with the taberna F 40 which closed the northern wing of the forum complex) two pits were excavated which cut deeply into the terracotta floor of the building east of the sacred area. One of these was in turn cut and covered by the foundation of the east perimeter wall of room F 40. At the bottom of the hole, at circa 2 m below the flooring, there was a structure which seemed to belong to a very early building phase, pre-dating not only the forum but also the 2nd-1st century B.C. sacred complex.