Aquae Sulis incorporated into British legend. The thermal springs at Bath were said to have been dedicated to Minerva by the legendary King Bladud and the temple there endowed with an eternal flame. An 8th century poem in Old English, "The Ruin", describing the ruinous changes that had overtaken a Roman hot-water spring, is assumed to be a reference to Aquae Sulis. The poem was copied in the Exeter Book for transmission to future generations. Rediscovered from the 18th century onward, the city's Roman remains have become one of the city's main attractions. They may be viewed almost exclusively at the Roman
Geothermal energy a renewable energy source like geothermal. But as a result of government assisted research and industry experience, the cost of generating geothermal power has decreased by 25% over the past two decades. In 2001, geothermal energy costs between two and ten US cents per kWh. Hot springs have been used for bathing at least since Paleolithic times. The oldest known spa is a stone pool on China's Lisan mountain built in the Qin Dynasty in the 3rd century BC, at the same site where the Huaqing Chi palace was later built. In the first century AD, Romans conquered "Aquae Sulis",