Bajío 307 is a residential complex of 82 apartments located in Mexico City. The main challenge was to work with an early 20th century house was restored and it was decided that it would house the access and common areas as the lobby, library, cafeteria, gym, swimming pool and bar. From there, the project was resolved through a longitudinal compositional axis in the center of the lot; two volumes are distributed among seven-level volumes each one. The green walls were designed as a series of openings and ramparts that strategically generate natural lighting and ventilation inside the apartments