The design represents an offer for the renovation of the buildings of the National Sport Association of the Defense Ministry, located in Sofia, area of"Karo", the region of "4th kilometer". The project includes total reconstruction, structural support and renovation of the buildings. New layouts of the existing complex are designed to establish halls for field-and-track events, eastern battles, fitness center with service rooms and SPA, gymnastic halls, medical center etc. New designs of facades with contemporary materials and systems are presented, as well as new designs of all floor coverings, wall finishes and engineering systems.