In the last years, among the most debated approaches in field of architecture, there are the reason and the way to recover a historic building and return to prominence as a witness of history, including its own contemporaneity, moreover, considering its environment and its placement into the city.The present work deals with the project carried out by the architects Fuensanta Nieto and Enrique Sobejano of the Castle of Light in Las Palmas de Gran Canaria (Canary Islands, Spain).It has been interesting to analyse this intervention for the abilities in the urban regeneration of a cultural nature.This proposal generated a social debate that even led to a project modification and put in the front line of information a question of historical legacy.Currently, the Castle of Light is the headquarters of the Martín Chirino Foundation, effectively combining a recovered architecture and a new use, hence it can be considered a representative example of requalification.