The town was founded in 1620; its first name was "Real Villa de Sacramento y Ojocaliente Mina de Bastidas." In the 1900s (decade),
copper mines were actively developed in the town. The name of Ojocaliente (literally "hot eye") derives from its
hot springs ("ojo" figuratively meaning pond, springs, or pool), and
mineral veins that were exploited in the hills of Santiago. In 1927, those springs became the source of contention between locals and the Federal Government, when troops bathed in the town's only water source available. ==Transportation==