Kulturkirken Jakob

The Trinity Church in Oslo is a monumental church of 1858, erected in red brick according to the drawings of the German architect Alexis de Chateauneuf (1799 - 1853). The Trinity Church is considered to be a major work of 19th-century European scrupulous architecture. Inside, the altarpiece with the "Baptism of Jesus" by Adolf Tideman, is one of the most copied altarpieces in Norway.

The church was consecrated on 24 August 1856 and converted into a cathedral when the Catholic Diocese of Oslo was founded in 1953. It is the second Catholic cathedral in Oslo (the cathedral of Saint Hallvard became Protestant at the Reformation in 1537).

Oslo Cathedral was consecrated in 1697 and was then called Our Saviour's Church. Built of stone mixed with brick, it is a cruciform church with a chancel in the east and a bell tower in front of the western cross arm. The tower was raised in 1850. In 1937 some of the neo-Gothic elements added in the 19th century were removed from the church hall, including the ceiling ribs, and Hugo Lous Mohr painted the distinctive ceiling pictures that can be found in the church today. As a "national church", it is used by the royal family and the state for official purposes.