The western part of the chancel and the eastern part of the nave are the oldest parts of Herslev Church dating from the Romanesque period. The chancel and the nave were extended in the late Middle Ages, when the porch was presumably also built. When the chancel was extended, a vault was erected.
The church was restored in 1881: the porch was rebuilt, the large windows were put in and a wall was put round a belfry at the west end of the church. In 1977 this belfry was removed and today the bell hangs in the bell frame on the preserved burial mound in the western part of the churchyard. The older and cracked bell placed near the entrance to the west end of the church is highly effective.
On the comparatively new altar stands a very fine triptych dating from the early 16th century. On the altarpiece's lower right-hand corner is painted the years 1736 and 1919, both referring to restorations. The piece has been thoroughly restored in 2013. The piece shows the Lord and the crucified Christ accompanied by Mary with the Child and St Michael the dragon-slayer, who again are surrounded by the twelve apostles. The attractive baptismal basin in the Romanesque font is late 16th century, and the decoration in the middle represents the Annunciation.
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.