La Chiesa Parrocchiale di S. Maria Assunta, located south of the old Pieve Santa Maria, stands elevated above the square, its access emphasized by an elegant and simple staircase that enhances the imposing facade, creating a pleasant scenic effect. The growing demographic development of Erbusco, only interrupted by the plague of 1630, necessitated the construction of a new church as the old Pieve could no longer accommodate all the faithful during religious ceremonies.
With the financial and political support of Count Gasparo Martinengo and after some resistance from the Ospedale Maggiore, in 1689, the consent of Venice and the authorization of the Senate were obtained for the construction of the new parish church. Designed by the noble architect Gian Antonio Girelli from Erbusco, it was completed in 1719. The rectangular layout and east-west orientation, the perfect harmony of lines, the imposing facade, and the three aisles divided by sturdy square plinths, paired columns, and fully centered arches make the Church of S. Maria Assunta a masterpiece of Gian Antonio Girelli, a symbol of eighteenth-century architecture.
The interior is characterized by precious altars, a barrel vault in the central nave, and a sail-like vault in the side aisles. Particularly fascinating is the main altar, with a suggestive marble altarpiece with red tones and white veins, adorned with yellow marble volutes on the sides. Above it stands a ciborium in the shape of a small temple, a work by Andrea Fantoni. The altarpiece depicts the Assumption, while the fresco in the apse portrays the Coronation of the Madonna.