The Roman empire established its rule in 9 AD and built roads and fortresses in places like Kralupi, Seoča and Mokronozi. Area of Visoko was part of Roman province Illyricum.
Medieval Bosnian state and kingdom (958-1463)
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. Visoki and other historical places in the Visoko valley were the early center of the once powerful 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 Velikog rusaga bosanskog (Big Bosnian Rusag) assembly 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. By 1340, Mile was the centre of the church province of Saint Kuzme an Damjan (first mentioned in 1244), and the remains of the church can still be seen at the site. 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, founded in 1175 was one of the first in Europe, and was known for its
