Diocletian's palace is one of the best preserved monuments of the Roman architecture on the world. The palace is located on the south coast of the Split peninsula. It was built by the roman emperor Diocletian. It is assumed that the building of it started in 293. After leaving the throne in 305 the emperor settled there with his family. It is believed that he continued to live in it until the end of his life and also that he was buried there.The building was made from the stone from the island Brač and the ornamental details such as sphinxes, marble and carved stone ornaments were brought from Egypt, Italy and Greece. With all four sides the palace was surrounded by walls and towers (four square and six rectangular). The building was approached with four gates. The three of them were on the mainland side and the fourth was reached from the sea. The southern side of the palace which was turned to the sea (in the Diocletian's time it was rising directly from the waters of the sea) had smaller openings than the eastern and western sides which were similar with no ornaments. On the northern side there was the main, double, doors. The palace was divided into four parts by the main roads. The northern part was intended for emperor's military and service purpose and southern part for official and religious purposes as well as for residential needs of the emperor and his family. In the southern part of the palace were three temples, the emperor's mausoleum, spa and the emperor's residence.In the middle of the seventh century a part of residents, who were refugees from the nearby Salona, settled the fortress/palace with their coming. Diocletian's palace turned to become a city of Split, which later spread out of the walls. Later during the whole medieval century, the palace gradually changed it's original appearance since the new buildings were being built inside. Until today some parts of the palace have been very well preserved, the only as based buildings. Together with the later medieval additional buildings, Diocletian's palace became valuable both archaeological and historical artistic complex and, for that reason, it was included into the UNESCO's list of the world's heritage in 1979.