The ruins consist of an apsidal structure built of laterite slabs within, which towards the apse-end is a circular wall.
The oblong space in front of the circular wall is enclosed by walls, raised on the paved surface within the framework of the apsidal structure, to form an oblong chamber.
Towards the base of the apsidal wall are two arc-like buttress-walls built of three rows of laterite blocks placed on edge and supporting one another.
The Church was built between 1466 and 1490 under the direction of Guiniforte Solari, only subsequently in 1492 the apsidal part was added by Bramante.
In the refectory of the church of Santa Maria delle Grazie, ancient premises of the Court of the Inquisition, one of the absolute masterpieces of history is kept: Leonardo da Vinci's Last Supper.
The fame of the building is also due to the tribune of the apsidal part on today's Via Caradosso, added in 1492.