Three arched roman basilica is dedicated to St. Justin, the basilica is considered to be an architectural "Unicum". The mansion is an anthology of asymmetry: the central nave is clearly shifted with respect to the longitudinal axis of the church.
The southern wall is 80 cm longer than the north, making the angle of the walls connecting is not true but obtuse. The windows are lunettes shaped, but they are slightly smaller south. The same applies to columns that part of the arches and their capitals. Nowadays, thanks to its beautiful garden, a cultural and artistic events hold place in St Justin.