Kaldalón Auditorium is situated on the ground floor of Harpa, on the building´s north side. Kaldalón is equipped with top-notch audio, video, and lighting technology. The coloured lighting in the walls can be customised to create the desired ambience.

The hall features adjustable reverberation time, allowing Kaldalón to be tailored for different types of events. The seating is fixed and arranged on a sloped gradient toward the stage area. The stage itself is movable, and the floor can also be used as a platform for musicians.

Kaldalón has backstage facilities, including two spacious dressing rooms equipped with toilets, mirrors, lockers, and showers.

Norðurbryggja, an open space in front of Kaldalón, offers a stunning view of the old harbour of Reykjavík, making it a perfect location for receptions and exhibitions.