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.
Oslo Cathedral
Oslo Cathedral is located at Stortorvet square north/north-east of Karl Johans gate, between Kirke gate and Dronningens gate. The Cathedral's lower end is surrounded by the Bazaar ("Basarene ved Oslo domkirke"), a curved long building with a tower covered in green copper like the Cathedral. Integrated with Basarene is the Fire Watch ("Brannvakten") which served as Oslo's main fire station from 1860 until 1939, when today's main fire station at Arne Garborgs plass was opened. The Cathedral, Basarene and Brannvakten are all built in red brick. Both Basarene and Brannvakten were built between the years 1840-1859 from the plans of City Architect, Christian H. Grosch.