The Art Gallery of Treia is located on the first floor (piano nobile) of the Town Hall. The exhibits are mainly paintings representing sacred subjects. There are also several portraits of personalities who played a leading role in the cultural and political life of the town. These pictures belonged to the art collection of the old and prestigious Accademia Georgica. Of particular note is the “Immaculate Conception” attributed to Giuseppe Bastiani, where we can see a luxuriant Italian garden, painted to symbolise the hortus conclusus, i.e. the Madonna’s virginity; “Saint Lucy’s martyrdom” by Pietro Tedeschi, from the Augustinian church in the town and the “Extasy of St. Margaret of Cortona” by Antonio Balestra.