The first cathedral in Crema was destroyed by Frederick Barbarossa in 1160. A new building was begun in 1185, but construction was halted in 1212, not to begin again until 1284 but in Gothic style. The church was finished in 1340, with the addition in 1385 of a lengthened apse and a crypt.
The façade is in typical Lombard Gothic style, with a single portal surmounted, in the lunette, by sculptures of the Madonna and Child and Saints Pantaleon and John the Baptist over a frieze with the faces of saints. Over the portal is a large marble rose window, flanked by mullioned windows. The façade terminates in a loggia with small marble columns.
The bell tower, on the right side, dates to the 14th century, while the octagonal upper part is from the 17th century.
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.