The present Endre church was preceded by an older, Romanesque church. Of this church, only the tower, built in the 12th century, remains. A few stone sculptures have also been re-used in the later church, e.g. one sculpture depicting a dragon and another a lion. These are now immured in the southern façade of the church. The rest of the church dates from the 13th century (the choir and sacristy) and the early 14th (the nave). The building material of the church is limestone.
Apart from the aforementioned Romanesque sculptures, the exterior of the church is also adorned with sculpted portals, both Romanesque and Gothic in style.
Internally, the church is decorated with frescos made by the artist known as the Master of the Passion of Christ in the middle of the 15th century. The frescos were uncovered during a renovation in 1915. The church also have several preserved stained glass window panes from the Middle Ages. The altarpiece is furthermore medieval, from the late 14th century, as is a preserved church tabernacle. The triumphal cross dates from circa 1300, and the baptismal font, possibly made by the artist Hegvald, is a Romanesque piece from the 12th century, richly decorated.
The church lies in a cemetery that is surrounded by a low limestone wall, in which a medieval lychgate still survives.
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.