It is estimated that the number of people over 65 in Europe will increase from 101 million in 2018 to 149 million in 2050. The possibility of ageing well depends on many factors, but the environment undoubtedly plays a key role. Architecture for the elderly is and will be one of the most sought-after typologies and, in order to respond to this strong demand, the architect must know its specific characteristics: layouts, volumetrics, materials, regulations...