The remains of the Roman aqueduct – one of the best preserved of northern Italy – imposing and well-known, still stand just outside the contemporary residential area, along the Bormida stream and their construction can be dated back, as it is highly likely, to the first imperial times, perhaps even to the Augustan era (early 1st century AD).
Two separate large parts of the original above-ground structure still exist, respectively made up of seven and eight masonry pillars, quadrangular in shape (measuring between 180 and 300 cm on their side, in proportion to the vertical development of the same pillars) that become progressively smaller upwards with a series of regular offsets, with a height of about 15 metres. Diminished arches rest on the pillars (there are only four left) of 3.35 metres radius, above which ran the water pipe itself, which no longer exists. The route of the aqueduct covers a total length of about 12 kilometres, starting from the water catch basin located in the Lagoscuro area (today in the municipal district of Cartosio), through the Erro valley (along the orographic right side of the stream with the same name), Marchiolli region up to the left bank of the Bormida river, with a total difference in height of about 50 metres.
References:Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).