Persepolis
Darius I built the greatest palace at Persepolis on the western side of platform. This palace was called the "Apadana". The King of Kings used it for official audiences. The work began in 518 BC, and his son, Xerxes I, completed it 30 years later. The palace had a grand hall in the shape of a square, each side long with seventy-two columns, thirteen of which still stand on the enormous platform. Each column is high with a square Taurus (bull) and plinth. The columns carried the weight of the vast and heavy ceiling. The tops of the columns were made from animal sculptures such as two-headed lions, eagles, human beings and cows (cows were symbols of fertility and abundance in ancient Iran). The columns were joined to each other with the help of oak and cedar beams, which were brought from Lebanon. The walls were covered with a layer of mud and stucco to a depth of 5 cm, which was used for bonding, and then covered with the greenish stucco which is found throughout the palaces.
Sivas
Excavations at a mound known as Topraktepe indicate Hittite settlement in the area as early as 2600 BC, though little is known of Sivas' history prior to its emergence in the Roman period. In 64 BC as part of his reorganization of Asia Minor after the Third Mithridatic War, Pompey the Great founded a city on the site called "Megalopolis". Numismatic evidence suggests that Megalopolis changed its name in the last years of the 1st century BC to "Sebaste", which is the feminine form of the Greek name corresponding to Augustus. The name "Sivas" is the Turkish version deriving from the name Sebasteia, as the city was known during the late Roman (Byzantine) empire. Sebasteia became the capital of the province of Armenia Minor under the emperor Diocletian, was a town of some importance in the early history of the Christian Church; in the 4th century it was the home of Saint Blaise and Saint Peter of Sebaste, bishops of the town, and of Eustathius, one of the early founders of monasticism in Asia Minor. It was also the place of martyrdom of the Forty Martyrs of Sebaste, also 4th century. Justinian I had a fortified wall around it rebuilt in the 6th century.