Besides the myths though, Halkidiki has a tradition that goes well back in time. The monasteries of Mt Athos stand tall – as they have done for 1,000 years and will continue to do so as  UNESCO World Heritage Monuments. Mount Athos is the third peninsula of Halkidiki and it does not only constitute a World Heritage Site, but it also renders an autonomous entity in the Hellenic Republic. Athos is home to 20 Eastern Orthodox monasteries under the direct jurisdiction of the patriarch of Constantinople. Mount Athos has been inhabited since ancient times and it is known for its nearly 1,800-year continuous Christian presence and its long historical monastic traditions, which date back to at least 800 A.D. and the Byzantine era. Today, over 2.000 monks from Greece and many other Eastern Orthodox countries, such as Bulgaria, Serbia and Russia, live an ascetic life in Athos, isolated from the rest of the world. The Athonite monasteries feature a rich collection of well-preserved artifacts, rare books, ancient documents, and artworks of immense historical value. 

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Olynthos has a unique historical past, from the years of Aristotle and even older. The modern village is called Nea Olynthos and it is located at the base of the peninsula of Kassandra, 78 km away from Thessaloniki and 12 km from Potidea. New Olynthos is the continuation of the Byzantine village of Myriophytos. After 1922 many refugees from Eastern Thrace and Asia Minor were added to the few local residents. Nowadays, the inhabitants amount to about 1200 and are mainly occupied in agriculture and olive-growing.
To the east of the new settlement, within a short distance, there are the ruins of the famous ancient Olynthos. The site is inhabited since the Neolithic Era (5300-4500 BC), while the word “Olynthos” is pre-Hellenic and probably has a meaning “wild fig”. According to tradition, it was named so by Olynthos, the son of the river God Strymon. Ancient Olynthos was built on two hills, the southern and the northern. The southern hill was occupied by the city, which, according to Herodotus, was founded by the Voctians of Imathia in the 7th century. B.C. This city was destroyed by the Persians of Artabazos in 479 BC. However, its inhabitants did not leave the area. They built a new city on the northern hill. It was the Olynthos of the Classical Period, built in the Hippodamian city planning system, with building blocks separated by horizontal and vertical streets. The accuracy of the city plan of Olynthos helps us understand how the Hippodamio city planning system was applied. It was to play a major role and to become the most important political, economic and military center of Halkidiki from the 5th to the 3rd century BC. Moreover, the founding of the Halkidian Common in 430 BC, meant the political union of 32 cities of Halkidiki under the command of Olynthos. The great prosperity of the city brought her into conflict with King Philip II of Macedonia, who could not tolerate the presence of another great force in his area and eventually led to its destruction in 348 BC. Today, a large part of the ancient city has been discovered in the visiting site of the excavation, and there have been found tombs, coins and mosaics of unique beauty that date back to different eras of Greek history.
An Archaeological Museum operates in the archaeological site. Excavations are not exhibited in its premises, but audiovisual material, with the help of which the visitor acquires a broader picture of the history of ancient Olynthos, is available. The findings of the excavations are found in the museums of Thessaloniki and Polygyros.

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