Old Aker Church
The church was built over the former site of the Akerberg mines ("Akersberg gruve"), an ancient silver mine which was in use since the early Viking era. The mines are mentioned in the 1170 "Historia Norvegiae". The existence of these former mines must have been the inspiration for a number of local stories about the church having hidden silver treasures and even dungeons with dragons.
Old Aker Cemetery () is the cemetery of Old Aker Church. Like the church, the cemetery dates back to the Middle Ages. The cemetery is located adjacent to the newer Cemetery of Our Saviour, which was established in 1808. Several notable people are interred in the cemetery.
Bankplassen
When Norges Bank's headquarters were moved from Trondheim to Oslo, the Bank's new building at 4 Bankplassen was completed in 1906 after drawings by architect Ingvar Hjorth. On 1 September 1986, Norges Bank was moved to a new continuous block building with address at 2 Bankplassen, designed by architects Kjell Lund and Nils Slaatto. Several older apartment buildings were then integrated into the new building. Other well-known institutions on Bankplassen are the Engebret Cafè with address at 1 Bankplassen.