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
Woodhall Spa pool. The park also offers tennis courts, a bowling green, children's playground, croquet and a cricket ground, which is home to Woodhall Spa Cricket Club. On 22 December 2010, BBC Radio 4 broadcast the half-hour-long "Australian Wanted in Woodhall Spa", presented by Chris Ledgard and detailing overseas players playing for English amateur cricket clubs. In December 2010, East Lindsey Council sold Jubilee Park to the Woodhall Spa residents for £1. It is currently undergoing renovations. Jubilee Park is next to a caravan park of the same name. The Pinewoods is a woodland at the centre of the village, owned by