In a beautiful picturesque place of Krainka in Tula Oblast with a favorable temperate climate and air saturated with salts and minerals, 250 km from Moscow, in the territory of the Likhvinsky geological fault, a unique balneological resort with a 170-year history is located. The Likhvinskiye Vody Spa-Hotel in Krainka is located near the picturesque coast of the Oka River, Optina Desert, and Dobrinsky Monastery. This is the closest to Moscow full-fledged natural resort with healing mineral waters and muds, which is listed in the UNESCO register.