The holdings of the Catholic Church on Main Street were part of the Second Division Grants for "planting ground" made in 1640. By the 1680’s, more than 30 acres of this land was owned by John Pynchon, which he later sold to the Taylor, Leonard, Cooley and Day families.
The Immaculate Conception Roman Catholic Church was first established as a mission of St. Michael’s Cathedral in Springfield. Through the missionary labors of Father Gallagher, mass was being said as early as 1861 but, at that time, there was no church building and priests were saying the mass in private homes or in a local hall. Around 1873 the Catholic Church obtained a part of the Major John Day farm and a wooden church and rectory were built here in 1878. The present building was constructed in 1913. The new church was built in the Italian Renaissance style with a square corner tower. Over a period of time, as the parish grew, a parochial school and convent were added. The school and convent are now closed.