The publication of the book 'Un siglo de transporte urbano en Castellón: Historia del transporte público en la capital de la Plana' (A century of public transport in Castellón: History of public transport in Castellón de la Plana), by Pablo Marco Dols, winner of the 19th edition of the Demetrio Ribes Award, addresses a very relevant question on the configuration of the territory: public transport in the city and between the city and its neighbour regions. The book analyses the creation and evolution of public transport in Castellón de la Plana and its maritime district since the installation of the first steam tram until today, including the companies which have managed it through the years and the salvaged heritage. The evolution of transport had, and has, a great influence in urban development. Transport and urban growth have influence each other, thus the study of the evolution of mobility in Castellón de la Plana is essential for the analysis of the historical growth of the city and its current configuration. Today as in the past, public transport is key for urban mobility, in addition to be a fundamental element for transforming the cities in kinder spaces. Its analysis will allow development in stablishing plans to favour a more sustainable urban mobility, as well as affect the growth of the city.