Legend has it that a spring gushed out of a rock in that place in 1241 to save Christians besieged by the Turks.
The spring became a symbol of protection and refreshment for pilgrims. It also had a healing reputation, and belief in the miraculous power of Hostýn water has deep roots among the people to this day.
The spring is visited by various Moravian people: Hanáci, Vlachs, Slovaks, who wash their sick limbs with the miraculous water.
The spring, together with the water chapel, was called Moravian Lourdes and compared to the French Lourdes in southwestern France at the foot of the Pyrenees, where the Virgin Mary appeared in 1558. The Moravian Lourdes are, however, much older. Holy and truly miraculous water has been begged by Mother Hostýnská for the Moravians from the spring from the rock below the embankment for more than 700 years.
The Water Chapel was also called the Well Chapel in the past.