Old Aker Church
Old Aker Church was built as a three-naved Romanesque style basilica and constructed from limestone. It is believed to have been erected by King Olav Kyrre in 1080 as a church for all of Vingulmark, the historic area surrounding Oslo. The grounds of Old Aker Church were originally likely the former site of the regional thing during the pre-Christian period.
Trinity Church (Oslo)
Trinity Church (in Norwegian, Trefoldighetskirken), is a church in the Hammersborg neighborhood in central Oslo, Norway. Trinity Church is neighbor of the government buildings in Regjeringskvartalet. It is the parish church of the parish of Trinity, belonging to the Diocese of Oslo of the Church of Norway. It 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. Trinity Church is the largest church in Oslo and one of the largest of the many octagonal churches in Norway, but one of few octagonal churches constructed in red brick.