The Parish Church of Ponso has very ancient origins, documented as early as the 10th century, when the territory had several churches, including St. Mary Assumed and St. Michael. The so-called "Chiesazza," initially the main seat, was abandoned in the 16th century due to flooding; between 1536 and 1587, a new church dedicated to the Blessed Virgin Mary was built.
Between the 17th and 19th centuries, the building underwent significant expansions: in 1683 it was renovated, while between 1871 and 1885 it was extended, expanded with side chapels, and enriched with new marble flooring and an elevated presbytery.
During World War II, on the night between April 27 and 28, 1945, the church and the bell tower were destroyed along with numerous houses. For several years, the community gathered in temporary buildings until reconstruction: the first stone was laid in 1946, the new church was inaugurated in 1949, and the bell tower was completed in 1957.
The current building features a sober style, with a single nave, presbytery, and apse, side altars dedicated to the Rosary and the Sacred Heart, stained glass windows, and a separate bell tower. The facades are made of exposed bricks with a base in trachyte.
Between 2000 and 2004, liturgical adjustments were made with new furnishings in Nanto stone and the recovery of the baptismal font from the previous church, thereby preserving a link to the historical memory of the place.