Calmeyer Street Mission House

The Calmeyer Street Mission House (Norwegian: Calmeyergatens Misjonshus) was a gathering place for Lutheran meetings in the Oslo neighborhood around Hausmanns gate (Hausmann Street); the location of the site is today's Calmeyers gate (Calmeyer Street) no. 1.

Otto Treider was responsible for the mission house being built in 1891. It was a Gothic Revival structure designed by the architect Henrik Nissen. It contained Scandinavia's largest assembly hall, capable of accommodating over 5,000 people. The Kristiania Home Mission Society (Norwegian: Kristiania Indremisjon) took over the building in 1898. This provided a venue for a series of large gatherings, including full-scale revivals in 1905 and 1906 that filled the building night after night. Prime Minister Christian Michelsen also delivered a speech there in 1905. The building was also the meeting place for the well-known Calmeyer Street Meeting in 1920 during the dispute between the liberal and orthodox theologians in the Church of Norway. During the German occupation of 1940–45, the building was requisitioned by the German military. Until the 1950s, the building was frequently used for concerts. It was later used as a warehouse until it was razed in 1972.

The lot was used as a parking lot, among other purposes, until the Church City Mission built an office building with rental housing there. After the new building was completed in 1987, the office space was leased to Norwegian Board of Health Supervision.