The building is a gym center focused on boxing. The project consists of a renovated ground floor and an extension. At the center is a patio that articulates the transition between the renovation and the extension. The concept expresses a spiral movement starting with the boxing ring and ending up on a terrace. This spiral development is a metaphor for the user's progression. The architectural vocabulary mimics the traditional boxing imagery : social and sport progress, glorification of the ring, the use of mirrors, industrial materials (steel, wood...).