Ildefonso Cerdá will go down in history as the founder of modern urban planning. A man ahead of his time, he was able to unite his two passions, engineering and politics, in a project that would bear his name: the Barcelona Eixample Plan or Cerdá Plan. Born at a time when the conditions of the working class in large cities were deplorable, he dedicated his life to creating a better environment for the inhabitants. Despite the opposition of his contemporaries, he designed a city in accordance with his ideal of justice, equality and freedom. A clean place, full of light and greenery: the city of the future.