[1] The abbey is located on the left bank of the brook known as the Orba, 382 metres above sea level in the Province of Genoa, near the border of the Region of Piedmont.
It may have gained the name Tiglieto (Latin: Teletum) after being given the estate of that name by the Margrave Anselm of Ponsone in 1131.
In 1648 it was turned into a family estate of the last commendatory abbot, Cardinal Raggio, and dissolved.
The church is a primitive Romanesque brick basilica; the original side-chapels were removed in the 14th century to make way for a new east end.
The early Gothic chapter house in the east range has survived, with a square chapter room with nine bays from the early 13th century and symmetrical triforium windows looking onto the central courtyard and the site of the cloister, no longer extant, with the dormitory with bricked-up windows in the upper storey, as have the sacristy, the Fraternei and to the south the refectory building, as well as the lay brothers' block in the west, now converted for residential purposes.