For about a month, the event arena will stand on a surface at Stockholm University, and then move on in the country.
The mobile arena will host concerts and cultural events, and is expected to accommodate up to 6,000 people.
- We have been looking for a long time for a perfect room but have not found it.
Now we are building it ourselves, says Karl Ohlsén Pettersson.
See and hear more in the video above.