San Vincenzo in Prato is the only church in Milan which has entirely maintained its original Palaeo-Christian appearance. The first church was founded by the Lombard king Desiderius in 770, who dedicated it to the Virgin Mary. Later it was entitled to St. Vincent, when the latter's relics were found in an urn in the crypt, together with those of St. Quirinus and St. Nicomedes (859) and St. Abundius. The name in Prato derives from its location in the 'pratum' (in the field) area owned by bishop Odelpertus.
In 806 a Benedictine convent was added to the church; in the late years of the same century and in the early 10th century the church, in dismaying conditions, was rebuilt, but with similar appearance. The octagonal baptistery on the exterior, on the left, was built by architect Paolo Mezzanotte in year 1932, and includes a column-shaped font called Pietra santa (the Saint Stone) coming from the ancient church of S. Nazaro in Pietra Santa, which was demolished in year 1889 during the construction of the new Via Dante. The convent was suppressed in 1520 and in 1598 the church was restored and turned into a parish.
The basilica measures c. 40 x 20 m, and is in brickwork. The interior is on a nave and two aisles with wooden spans ceiling. The columns are from different ages. The elevated choir ends with a large apse. Under the presbytery is the crypt, which has also a nave and two aisles divided by ten small columns with sculpted capitals.
San Vincenzo lies on the founding of a Roman temple or oratory built along the way to Vigevano probably dedicated to Juppiter, which was located within a Roman necropolis (of which some remains are visible in the external left walls of the church).
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.