Paulus kirke

The Sofienberg Church was built in 1877 and designed by J.W. Nordan. The church was originally called the Church of Paul (1877-1892), then the Church of Petrus (1892-1962) until it was given the name Sofienberg. Known for its good acoustics, the church is an attractive concert venue in eastern Oslo.

The old church of Aker is a stone church from the 12th century. The church has the shape of a basilica with a raised nave above the narrower and lower aisles. As part of the rehabilitation work in the 1850s, more and larger windows were installed and the lime plaster on the outside was removed. At the same time, the church received its large central tower. In the 1850s, when the parish of Aker was divided into three, there were plans to demolish the church of Gamle Aker, but this was prevented when the municipality bought the church in 1852. The medieval interior is not preserved, but in the 1950s attempts were made to give the church a more medieval appearance.

Lilleborg church is a modernist church built in a rectangular shape, built in concrete from 1966. The bell tower of the former parish church of Lilleborg is today located near the Lillomark chapel.