In the second half of the twentieth century the azulejo’s potential gained a new understanding and, as a result, was given preeminence. Its importance grew especially due to the architects’ role in the construction boom that changed the landscape of Portuguese cities. Among the second generation of new architects Álvaro Siza Vieira stands out; his work is acknowledged worldwide, although he only started using azulejos in his architecture later on. However, it is unquestionable that he has a perception of the azulejos’ potential and has brought out a new appreciation as well as opened new paths to an art that stands as one of the most genuine Portuguese cultural expressions.