The Basilica of Saint Vincent de Paul, located in the city center in front of Blois Castle, was built in the 17th century according to the plans of Jesuit architects, and has a typical Jesuit facade with three floors of the Doric and Corinthian order connected by wide spiral staircases. Painted from the 19th century, a five-piece apse, an altar carved into red marble columns, and two interesting monuments.