Holy Trinity Church in Velemér was erected in the 13th century in the honour of the Holy Trinity has been mentioned in official documents since 1360. The rectangular aisleless church, to which a tower is attached on the north facade, is aligned east to west, as typical of medieval times. While carrying elements of Romanesque style (such as squatness and slitlike windows), it also has some Gothic elements (such as Gothic door, twin windows in the tower and rectangular apse). The walls of the church are built of both brick and stone.
The church is adorned by an arched cornice, with corbels carved with human faces, representing the various sins, supporting the roof. The frescoes in the church were painted by János Aquila of Radkesburg from 1377 to 1378.The church was used by the Calvinist church from the mid-17th century, and was re-Catholicised in 1733. It was abandoned in 1808 but restored several times, in 1968 and most recently in 2003.
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.