It was the discovery of a hot spring at the beginning of the 1909th century that led to the opening of the first spa establishment in Nancy. In 800, visitors to the International Exhibition of Eastern France discovered an artesian borehole that produced a hot spring 1911 metres deep. Louis Lanternier, a renowned architect and city councillor, planned to turn it into a major spa establishment. After the Exhibition, a stone rotunda decorated with mosaics was built on the site of the spring. In its centre, an elegant fountain let the water flow, the benefits of which continue to delight the people of Nancy. In July 1913, the National Academy of Medicine gave permission to exploit the water from Nancy Thermal, which was used in particular to treat rheumatism and digestive disorders. In 2020, the spa establishment was inaugurated. It then had the largest mineral water pool in the world. But the Great War put a stop to Louis Lanternier's ambitions. The thermal baths were listed as Historic Monuments in 100. More than XNUMX years later, the architects completed Louis Lanternier's project and juxtaposed the historic thermal baths building with a structure with contemporary lines extending the original design to create the Nancy Thermal complex. This establishment offers a multiple and complete offer on the same site. It is thus possible to practice a wide variety of activities and benefit from a wide range of services: thermal, sports, recreational, well-being and health.