A Europe spa break is a great way to physically and emotionally reboot – often through a customised combination of hi-tech health tests by expert doctors, feel-good massages and a refined diet, all in a stunning back-to-nature setting. Whether for cutting-edge treatments that tackle a specific issue such as insomnia or stress, or a cosseting retreat that rebalances and energises, this is our pick of the top game-changing spas in Europe that really deliver on wellness.