Archaeological finds testify to the presence of human settlements in Tregnago since prehistoric times, inscriptions and objects of Roman age take us back in time, when it was a rather populated village.

In the Middle Ages, the parish churches of San Martino and Santa Maria played an important role of aggregation of the community, remaining however linked to the history of the monastery of San Pietro, Vito and Modesto of Badia Calavena. The Castle of Tregnago, which dominates the village and comes to life thanks to the important cultural event “Medievalia”, dates back to this period.

There are also many villas and weekend residences, built in the following centuries, that border the village, such as Villa Pellegrini, Cavaggioni, Cipolla and Ferrari di Spade; no less important are fountains, washhouses and capitals, which still represent an important historical and cultural testimony.