The front, extremely simple and linear, adorned only by a large window and the portal with a memorial tablet reminding of the foundation, hides one of the treasures of the town. The walls of the rectangular-shaped-hall are covered with pews, on which there are coupled white pilasters and frescos of uncertain attribution. These represent six episodes of Saint Ranieri’s life.

All this is dominated by a cornice from which a vault, marked by three nails from each side, rises. In each nail balconies and balisters are painted; and, over them, there is a frame supported by large brackets. In the upper part, it can be seen what remained of the fresco that reproduced “The Glory of Saint Ranieri taken in flight by the Angels”.

The altar, made of stucco, is considered an important artistic artefact. It is formed by a simple and linear table heald up by four caryatids and it is placed between two twisted columns. It is dominated by a painting, given by the community of Pisa, which represents Saint Ranieri, bringing a boy back to life (1969). This is supposed to be copy of the painting which was in the Pisa Cathedral and which was destroyed during the Second World War.

The top moulding of the altar is the original one and it is a painting representing the “Assunta” attributed to Alessandro Gherardini.