Parque Minero de Riotinto is one of Spain's most unusual industrial landscapes. The red and orange tones of the Rio Tinto come from the mineral-rich environment of a mining district with thousands of years of extraction history. Around Minas de Riotinto, visitors can connect the colour of the river with the scale of open-pit mining, British-era industrial heritage, and the railway that once moved ore through the province of Huelva.