San Giovanni Battista dei Celestini was built for the Celestine monks following the wish of Sir Antonio Galluzzi. Once the monks had settled in, they repeatedly had the building rearranged. They first assigned the building work to the Triachino and then to Tommaso Marelli. In 1770, the task of designing the prospect of the church and monastery was given to Tadolini. The interior is in the shape of a cross with a nave and vaults, and was greatly enhanced during the 17th and 18th Centuries with some works of art by important artists of the period. One of the most important paintings is Noli Me Tangere by Lucio Massari (on the first altar on the right). The sculptures around the altar are by Mazza, and the frescoes on the vault are by Burrini.