The Mountain Church or Saint Nicholas Church is a Romanesque basilica built between 1198 and 1209 and consecrated to Saint Nicholas. In the 15th century the Mountain Church underwent several renovations, which gave it a more late Gothic appearance. The two characteristic tower spires are built in that period. The lower part is still original. In 1580 the Dutch Reformed Church took the temple and renamed it the Mountain Church. All catholic features were removed from the interior, which was very common to do. The wall paintings were covered with white chalk.
In 1967 the church was disestablished and its property transferred to the Municipality of Deventer. The building is used as an exhibition center and concert hall. From 1991 until 2005, the church was used for temporary exhibitions by Museum de Fundatie.
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.