This project is а participant in the Walltopia competition about Collider Activity Center in Sofia, Bulgaria. The project is design by me and the project team in SGI, Bulgaria. It was really very excited to be a part of this competition, because there is no such kind of building in Sofia, and it would be the first one. In the presentation below, everything about the conception is writen, about the function etc. So, it would be better, if you read all of it.