Built in the 17th century and apparently hidden among the buildings, the church of Saint Michael the Archangel is a part of the history of Bari. It is said that, upon their arrival in Bari, the bones of St. Nicholas were preserved in this church. A narrow staircase in the counter-facade leads to the remains, which emerged during recent excavations, of the destroyed early medieval church extra moenia dedicated to St. Benedict, with limestone floor slabs and dark stone to compose geometric figures. The church was part of the Benedictine monastery founded in the tenth century, which was home to a scriptorium, a cultural center for writing codices, rebuilt in the eighteenth century, still retains the cloister of the original structure.
In the courtyard of the eighteenth-century convent, are still visible the remains of the medieval cloister, consisting of two wings, opened by four-sided windows, of which only one is preserved intact and decorated with columns of capitals crutch.
From Via Vallisa it is possible to see the medieval bell tower, inserted between the houses that lean against the convent, consisting of a cusped front and five single lancet windows.