Geothermal heating a total capacity of 15 GW extracted 88 PJ of heat energy for space heating. Global ground-source heat pump capacity is growing by 10% annually. Hot springs have been used for bathing at least since Paleolithic times. The oldest known spa is a stone pool on China's Mount Li built in the Qin dynasty in the 3rd century BC, at the same site where the Huaqing Chi palace was later built. Geothermal energy supplied channeled district heating for baths and houses in Pompeii around 0 AD. In the first century AD, Romans conquered Aquae Sulis in England and used the
Cheltenham Spa railway station Cheltenham Spa railway station Cheltenham Spa railway station is a railway station serving Cheltenham in Gloucestershire, England. Situated on the Bristol-Birmingham main line, it is managed by Great Western Railway (despite most services being operated by CrossCountry, which does not manage any stations) and is about one mile from the town centre. The official name of the town is simply "Cheltenham", but, when the station was renamed in 1925, the London, Midland and Scottish Railway chose to add "Spa" to the station name. The first railway to Cheltenham was the broad-gauge Cheltenham and Great Western Union Railway (C&GWUR), authorised by