The building itself is an amazing architecture. Despite being heavily underutilized, there is high-class restaurant, cafeteria, a Saga Museum and once in a while book and music markets are held there.
The lovely rotating restaurant will give you an amazing panoramic view of the Reykjavík greater area while you dine. Build on top of a six aluminum-sided tanks, each of which can contain 4 million liters of water averaging 85°C (185°F)
Take a walk on the viewing deck and enjoy a 360° panoramic view of the city. There is also a small artificial geyser next to the building.