The two-storey Lumiareena contains the arena hall, restaurant and the functions of the central reservation office in Iso-Syöte. The main entrance takes visitors from the ski slopes to the second-floor restaurant where the glass walls offer views of the slopes. The lower floor houses a 400 m2 hall, which can be used as a venue for parties and concerts and as a gym.
The restaurant continues into the adjacent multifunctional building known as Safaritalo, which was built in the early 2000s. The Safaritalo building also contains sauna and conference facilities, as well as a rental agency. This building has a covered connection to a newly constructed apartment hotel. This has created a complex of three interconnected buildings at the foot of the Iso-Syöte ski slopes.
Lumiareena was built from non-settling logs that will become grey over time due to the iron vitriol treatment applied to them. In terms of form, the building is minimalist, rising out of the terrain.