Šamorín Gothic church is composed of three naves. The eastern part of the church, an early Gothic holy cave, was constructed in the first half of the thirteenth century. Its outer walls bear traces of the late reconstruction. This, and the supporting pillars, may have been the work of Bratislava's mayor Alexander’s son Karol shortly after 1287. The holy cave was lit by five arched windows. Among these, only three east side windows are original, made in the first half of the 13th century. The two remaining windows on the south side were refurbished in the Gothic style in the 15th century, then in the Baroque style in the 18th century and, finally, enlarged in 1931.
After reconstruction around 1290, the whole church was decorated with painted figures, which were later covered but were revealed again during restoration. There are also paintings of standing Saints, a depiction of Holy Mary's death and Judging Jesus. The north side wing was built/rebuilt later, probably after some kind of a disaster, fire or possibly flood.
The organ case dates from the second half of the 19th century. The wooden gate on the outside of the north hall was made in 1844; the altar was made of red marble in 1904.
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.