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.
Oslo City Museum
The museum was first founded in 1905 as the association "Det gamle Christiania". Initiator and committee leader until 1912 was architect Fritz Holland (1874-1959). A committee members included Bishop of Oslo Anton Christian Bang, architects Torolf Prytz and Harald Olsen, artist Eilif Peterssen and military officer Thomas Heftye. The museum moved into the main building at Frogner Manor in 1909.