This region is characterized by the diversity of its surface and underground waters. The source of Buna is one of the largest and surely the most beautiful in Europe. This is one of the most beautiful examples of underground waters of cross the area.
Water comes out under a 200-meter-long cliff and forms the Buna River independently with its volume. In 1520, a religious building (Tekija) was built for the Dervishes (part of the final stream in Islam) – those who have left the society to study and grow closer to God. Tekija on the Buna River, built in the 16th century for the needs of the Dervish Order, is still the most mystical place in Bosnia and Herzegovina. The site itself has been declared a World Heritage Site by UNESCO and today most of the building is used as a museum whose entrance is conditional on the removal of shoes due to the sanctity of the place.
Tekija is open to visitors throughout the year, and in a beautiful garden that looks at the Buna source you can drink a refreshing drink, Turkish coffee or tea. Entrance to Tekija is charged 4 BAM for tourists and 2 BAM for locals. This area is also known for its diversity of flora and a large number of endemic species. At lower amplitudes, there are many evergreen and benthic plants, while on the hills there are rare forests. The fertile arable land is suitable for typical Mediterranean agriculture.