Coordinates: 59°54′27.39″N 10°44′48.00″E / 59.9076083°N 10.7466667°E
Havnelageret (also known as Oslo Havnelager) is a commercial building located at Langkaia 1 in Oslo, Norway. The house acts partly as a headquarters for Dagbladet, but also houses Norwegian Defence Estates Agency as tenants. The building has an outside surface of concrete. The Norwegian Intelligence Service has its Source Archive there—kildearkivet.
When Havnelageret was completed in 1921, it was the largest concrete building in Europe and the largest building in the Nordic countries.
The building was erected in the period 1916-20 and designed by architect Bredo Henrik Berntsen. The building had 11 floors, a tower and an area of 39 708 m² in its original form. The external dimensions were reduced by dividing up the facade with crane hunts, rises and towers. When it comes to style, the building can be placed into the group of Nordic Neo-Baroque with classical elements and details of Art Nouveau feel. In 1965 the building was awarded the Betongtavlen (an annual Norwegian prize for outstanding building architecture in concrete). Oslo Havnelager (Oslo Harbour Warehouse) is a monument dedicated to the huge development of ship transport during and after the First World War. The construction of the building was challenging and extremely difficult with contemporary technology, and with rising prices and wages during the First World War, all calculations were surpassed. From the original amount of 3.2 million Norwegian kroner, the final cost ended up at 9.3 million kroner.