Ciechocinek is known for its unique[clarification needed] 'saline graduation towers'. Experts have considered the local saline springs to be of extreme value and named the thermal spring no. 14 "a wonder of nature". The therapeutic qualities of these springs are directed toward curing cardiovascular, respiratory, orthopedic, traumatic, rheumatic, nervous system and women's diseases.
Following the invasion of Poland at the beginning of the Second World War, Ciechocinek was occupied by Nazi Germany and incorporated into the Reichsgau Wartheland as part of the district/county (kreis) of Hermannsbad (1941-1945). During the war the town functioned as a military hospital and also as a health resort for German citizens.