Leave your Botox and anti-ageing treatments back home. When in a spa town like Karlovy Vary, do as the locals do. First, buy a porcelain drinking cup which is available in various styles at stalls around town. The cup is designed for visitors to drink mineral water from the natural hot springs. With the temperature ranging from 32-72C, the water is believed to be good for the skin and to be able to heal illnesses such gastrointestinal diseases and metabolic disorders. Honestly, the water tastes a bit salty and unpalatable. But the higher the water temperature, the less salty.