The construction Haga Church (Hagakyrkan) began in 1856 and it was finished in 1859. The church and the pulpit were designed by architect Adolf W. Edelsvärd. The church represents the Gothic revival architecture style.
The first organ was installed in 1861 by the Danish firm Marcussen & Søn for the price of 20 000 Swedish crowns. It was rebuilt in 1911 (pneumatic action) and 1945-1951 (electric action) by the Magnusson organ building firm. It was restored to close to original condition 2002-2004 by Åkerman & Lund.
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.