and boosted trade and economic development. In 168 BC, the city came under Roman rule and flourished anew. Potidea's decay is linked to the invasions of the Huns, who invaded Macedonia in 540 AD. Consequently, despite Justinian's efforts in the 6th century AD, the city was completely deserted, according to historical sources. Its castle, being of great importance for the security of the whole peninsula, was repaired by John VII Paleologos in 1407 and later by the Venetians when they were given the city of Thessalonica in 1423 in an attempt to keep it from the Ottomans. In 1430 it came under Turkish domination. During the Greek Revolution of 1821, the people of Chalkidiki entrenched themselves in the castle. They fought hard until the ”turmoil of Kassandra“, the well-known "holocaust", when the canal 'ran with blood', which is commemorated with official celebrations every year on its anniversary, November 14. After the revolution, the old fortification was repaired and re-used, and a new cutting of the canal was made. References External links https://web.archive.org/web/20130701120432/http://kassandra.in-chalkidiki.com/nea_potidea.htm http://www.e-city.gr/chalkidiki/home/view_en/2101.php Populated places in Chalkidiki Former populated places in Greece