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.
Hieronymus Heyerdahl (1867–1959)
He served on the City Council 1911-19 and 1923-25 and as mayor of Oslo from 1911 to 1914. At the end of his term in office, he developed the plans to build a new Oslo City Hall ("Oslo rådhus"). Heyerdahl launched the fundraising campaign for a new Oslo City Hall in 1914. Construction started during September 1931 and officially the facility opened in May 1950.