Catalonia's first railway line - Barcelona to Mataró - opened with great excitement in October 1848. Since then, the railroad system has not stopped growing or being modified in order to adapt it to the country's needs. But there is one thing that has not changed since that first train arrived: the fascination caused by this mode of transport. This series aims to discover Catalonia's railway history and characteristics, but also the anecdotes and experiences that surround each track. The railways bring territories together and, therefore, their people. They are true ''iron ways'', which contribute to the country's structure and modify its social and economic relations.