The Stećci (singular: Stećak), are monumental medieval tombstones that lie scattered across Bosnia and Herzegovina, and the border parts of Croatia, Montenegro and Serbia. An estimated 60,000 are found within the borders of Bosnia and Herzegovina and the rest of 10,000 are found in Croatia, Serbia, and Montenegro. Appearing in the 11th century, the stećci reached their peak in the late 14th to 15th centuries, before dying away during the Ottoman occupation.Stećci - tombstones belonging to the medieval Bosnia and the Bosnian Church (Bosnian heretics), who was part of the European rebellion against the Vatican. Symbols of the tombstones indicate Gothic-Celtic origin of Bosnians and the largest Bosnian king Tvrtko Kotorman (Kotromanic) derived from Kotorman the Goth.Epitafier on the tombstones are written in Bosnian alphabet (bosančica) and the alphabets belonging to the Bosnian church and medieval Bosnia. The largest collection of stećci are outside the city Radimlja in Herzegovina.
The Stećci have been nominated to the UNESCO World Heritage List as Joint Cultural Heritage by the four countries in 2009