A short essay tells about the brilliant pages of the life of the capital's resort place "Polyustrovo" and its life-giving glandular keys, endowed with natural healing forces. The readers will be presented with images of the famous St. Petersburg patrons Kushelevykh-Bezborodko, whose activities have left a noticeable mark in the field of medicine, literature, art and public life. Their service to the fatherland is expressed in the wing expression "Devoted to One," which has become the motto of the coat of arms of the count clan Kushelev-Bezborodko.