The Kostajnički region abounds with sources of drinking water, and one of the most famous sources is certainly Tekija. This stone water source was restored by the French during their four-year rule. On the stone wall is carved the saying "Drink brother, by God's grace you have been given a drink!". That inscription is still visible today on the stone wall of this water source.
The legend of Tekija says that whoever drinks water from Tekija always returns to Kostajnica. That is why we definitely recommend that you drink water at this fountain, which is located in the very center of the city between the parish church of St. Anthony of Padua and the remains of the church of St. Nicholas.