The church of San Nicolò is located on the left bank of the river Sile and it is the largest building in Treviso. It is a latin cross and is formed by three naves and five absidal chapels. There are many frescoes of Tomaso da Modena. In the cloister you can visit the fresco of Tomaso da Modena which shows the firts glasses in the art history. The temple is considered one of the masterpieces of gothic architecture in Veneto.