that this area in Visoko basin was nucleus of new medieval Bosnian state which emerged in around 1000 AD. Only later on with construction of Old town of Visoki the term Bosna for the settlement would be rarely used. Visoko is named after the Visoki Castle and the town of Visoki, which occupied Visočica hill. Podvisoki, Mile (today's Arnautovići), Biskupići and Moštre – together known as Visoko valley - were the early center of the medieval Bosnian kingdom. Many historical charters were made and written in Visoko valley, including the charter of first Bosnian king Tvrtko I Kotromanić in 1355, in castro nostro Vizoka vocatum which was also the first direct mention of the town of Visoki. Visoki was also a place where many important documents and legislation of medieval Bosnia were signed and written. The town of Visoki had a defensive role in protecting trade center Podvisoki (Subvisoki) which was located just below the town and was one of earliest examples of the medieval urban environments in Bosnia. Podvisoki was long time main trade center in medieval Bosnia. The Rusag met at Mile, where Tvrtko I was crowned in 1377 and eventually buried alongside his uncle, Stjepan II Kotromanić, the Ban of Bosnia who preceded him. The Medieval Bosnian State Archive was also located there. Mile is today known for its many ornamented tombs of kings, bans and other former rulers. Ban Kulin's Plate (dating from 1193) was discovered at Biskupići, along with the remains of another medieval church, grave sites and the foundations of several other contemporary structures. Moštre's university was knows for its scholarship in medicine, theology, cosmogeny and ethics, although because of its connection to the Bosnian Church, nothing remains of its archives. Its existence is documented only by a handful of references in the Vatican archives of its enemy, the Catholic Church. Other notable medieval settlements in the vicinity included Sebinje town, Čajan town in Gračanica – which protected the roads between Visoko and Bobovac – and the town of Bedem i Goduša. Ottoman Empire (1463–1878) The area of Visoko was conquered by Ottoman Empire around 1463, and it is from this time period that modern Visoko was formed. The founder of the town of Visoko was Ajas-beg (pasha), who was originally from Visoko but converted to Islam from Bogomilism. Visoko was a municipality at that time. From 1483, a voivod served at the head