The Hylleraas Centre has two branches, with offices at the University of Oslo and the University of Tromsø - The Arctic University of Norway, 1150 km apart.
The Oslo premises are located at the Department of Chemistry, on the second floor of the west tower. When you come in the main entrance, take the stairs to the left up two flights to the second floor.
The Tromsø premises are located at the Department of Chemistry, on the third floor of the Science Building (Realfagsbygget). When you come to the main entrance, turn left and take the stairs on your right three flights up to the third floor.