This is an old school building in the city centre of Kristiansand known as Kongensgate skole (the Kings street school). The building itself was built 1897-1899, and the architect was Richard Mauritz Tønnesen. As a fun fact about the building, you might see that there is a difference in the windows on the building. It was apparently meant to be that the different floors of the building had windows with a different shapes.
The building is no longer in use as a school, and has been used for multiple things the last couple of years, including plays and a place for beggars and others to spend the night in the winter. It is currently being discussed what is to be done with the place, and it seems it will be turned into apartments at some point.
This picture was taken in mid-February 2017, where the streets Kongens gate and Holbergs gate cross, and the building is situated.