400 years of Ottoman rule. In Olympus, the second armatoliki was founded, led by Kara Michalis in 1489. The action of the klephts in Olympus led the Turks to visit their outrage on the klephts' ally-village of Milia (in the late 17th century), which they destroyed. In that period Livadi in Olympus became the seat of the armatoliki of Olympus and Western Macedonia, with their first renowned commander Panos Zidros. In the 18th century the Turks had to replace the armatoloi (who very often joined the klephts) with Muslim Albanian armatoloi who ravaged the countryside of Macedonia. However, Olympus's armatoloi, even after their capitulation to Ali Pasha, never ceased fighting on land and at sea. Among them who were active there and in nearby regions were Nikotsaras, Giorgakis Olympios and the legendary family of Lazaioi. In the early 20th century, even for some time after the liberation from the Ottoman Empire (1912), robbers were active in the region – the best known of them the notorious Giagoulas, while during the German invasion in 1941 the Royal Hellenic Army fought significant battles along with units of New Zealanders and Australians. During the German Occupation (1941–1944) the mountain was one of the centers of the Greek Resistance, while a little later the Greek Civil War (1946–49) started there, in Litochoro. Ancient and medieval sites The whole region of Pieria's Olympus was declared archaeological and historical site for the preservation of its monumental and historical character. Five kilometer away from the sea is Dion, sacred city of the ancient Macedons, dedicated to Zeus and the Twelve Olympians. Its prosperity lasted from the 5th century BC to the 5th century AD. The excavations, continuing since 1928, have revealed numerous findings of the Macedonian, the Hellenistic and the Roman period. Currently there is a unique archaeological park of 200 hectares, with the ancient town and the sacred places of worship, outside its walls. Many statues and other invaluable items are kept in the nearby Dion's archaeological museum. Pimblia and Leivithra, two other towns in Olympus's region, are related to Orpheus and the "Orphic" mysteries. According to a tradition Orpheus, son of Apollo and Calliope (one of the Muses), taught here the mystic ceremonies of worship of Dionysus (also known as Bacchus). By the sea, in a strategic position, at Macedonia's gates is located Platamon Castle, built between 7th and 10th century AD in the ancient