The walls were built just after Cassander found the city in 315 B.C. The sea-front walls were demolished during the last period of Turkish occupation, whereas in the upper section, you can still see, and visit, the Acropolis and the Heptapyrgio fortress.
Built by Cassandros on older settlements existing since the Neolithic Age, at the end of Thermaicos gulf, took its name after the sister of Alexander the Great. Keystone of the Hellenistic world, the First of Macedonians, a very important city of the Roman Empire, co-capital of the Byzantine Empire, famous center between East and West, main commercial junction on via Egnatia, metropolitan centre of the Balkans, a cosmopolitan city on the rising of the 20th century, Thessaloniki still keeps memories of its long history of more than 2300 years.
Thessaloniki allowed the peaceful penetration of different peoples and civilisations, incorporated religions, customs and traditions, weaving its own destiny.
Ancient temples, palace clusters, triumph arcs, Byzantine churches with artistic mosaics and wallpaintings, impressive fortifications and towers, ottoman baths and mosques, glowing public buildings, neoclassic mansions and picturesque scheduled neighbourhoods testify the sequence of civilisations passed and compose the scenery of an outstanding and significant city.
It was the center of movements of working class and the shelter of incoming refugees adding colourful pebbles on the human mosaic of its population.
Poetic and amorous city, it gave birth to litterateurs, poets, artists and figures of Greek social, economic and political life.
It was sung, painted, desired, besieged and conquered by Serbs, Genoats, Venetians, Crusaders, Saracens, Jews, Armenians and Muslims, and all of them left behind them their own signs. It returned to its physical owners, the Greek State in 1912, as keeping always its nationality and uniqueness.
Another tower of the Walls of the city, dated in the Byzantine Era. It is a corner-tower placed on the top of the hill, at the old city or "ano poli" (="upper city") as we usually call it.
Originally it was part of the fortification. Later it was used as a prison. Today it isn't used any more, so it can be visited.