By creating a space which is open onto the city and welcoming for visitors, the proposal for the Collider Activity Center by SO-AP Architects intends to be a place of importance in the city of Sofia. The objective is to propose a building designed to meet the expectations of a wide audience motivated by the challenge and keen on using a place offering multiple combinations of sports and rest, while being able to enjoy views on the city and its surroundings. More images and architects' description after the break.