In the 11th century BC, the kingdom of Amon, which worshipped the Egyptian sun god, built the capital on the castle hill, which was called "Amon" and later evolved into Amman. Around the castle hill, square, rectangular or round fortress or watchtower were built with large stones. Two statues of King Amon, excavated in archaeological excavations on the hilltop of the castle, prove that the art of carving of the Amons was similar to that of the Egyptians and Assyrians at the time. Around 300 BC, King Ptolemy II of Macedonia named Amman "Ferradefia" after him, and Philadelphia was mainly on the castle hill. Around AD, Amman became the capital of an important administrative region of the Arabian Wumayet dynasty, and then changed from Ferradfia to "Amman", where Arabs built a west-east Emil Palace on Castle Hill. The remaining ground-based structures include the Roman-era Temple of Heracles, the Emil Palace Group of the Woumeier era, and a Byzantine church. Archaeological excavations have also found a large number of relics of Rome, Byzantine and early Islam. The castle hill is also the best place to overlook the city of Amman. On the top of the mountain, the white buildings in Amman are scattered and scattered, and you will have a more sensual understanding of the beauty of Amman's "white city". The ancient Roman theater is at the foot of the mountain, like half a circle set in the city, and it still often holds performances in summer.