Tiglieto Abbey, founded in 1120, was the first Cistercian abbey to be founded in Italy, and also the first outside France. It was a daughter house of La Ferté Abbey. The first abbot was probably Opizzone. It may have gained the name Tiglieto after being given the estate of that name by the Margrave Anselm of Ponsone in 1131.
In 1442, through Pope Eugenius IV, Tiglieto became an abbey in commendam. In 1648 it was turned into a family estate of the last commendatory abbot, Cardinal Raggio, and dissolved. In 1747 the area was occupied by the Austrians, who shortly afterwards were driven out by the Genoese. In 2000 Tiglieto was reoccupied by the Cistercians.
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 nave was vaulted in the Baroque period, and a new choir at the west end was added at the same time, as was a Baroque campanile.
The conventual buildings are to the south of the church. 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.
The entire precinct was renovated for the new community that took over the premises in 2000.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.