The Trinity Church (Trefoldighetskirken) is one of the largest churches in Oslo (1000 seats). The church itself is in the raw red brick, while the vaults, arches and small columns have gray scale color. The nave is octagonal with a Greek cross superimposed, with the choir in the apse, shallow transept and rectangular entrance flanked by two slender, octagonal bell towers. A central dome rises above the church.
The Trinity Church was consecrated in 1858 by Bishop Jens Lauritz Arup. The church has a neo-Gothic central plant, with two towers and eight-sided dome, and was designed by architect Alexis de Chateauneuf (Hamburg, Germany), but some time after the work was entrusted to his pupil Wilhelm von Hanno, who made some modifications to the original plans and put his personal stamp on the details of interior decoration. The main body (1872) is the work of Claus Jensen, the altarpiece (1866) is a painting by Adolph Tidemand (the Baptism of Jesus), chandeliers were designed by Emanuel Vigeland in 1923, and Frøydis Haavardsholm was the designer of the stained glass windows.
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.