Old Aker Church
Old Aker Church () is a medieval era church located in Oslo, Norway. An active parish, the church is the oldest existing building in Oslo. The church is surrounded by Old Aker 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.