Heraklion or Iraklion (hɪˈrækliən ; Ηράκλειο, , iˈraklio) is the largest city and the administrative capital of the island of Crete and capital of Heraklion regional unit. It is the fourth largest city in Greece with a municipal population of 177,064 and 211,370 in its wider metropolitan area. according to the 2011 census.
The Bronze Age palace of Knossos, also known as the Palace of Minos, is located 5.5 km (3.1m) southeast of the city.
Heraklion was Europe's fastest growing tourism destination for 2017, according to Euromonitor, with an 11.2% growth in international arrivals. According to the ranking, Heraklion was ranked as the 20th most visited region in Europe, as the 66th area on the planet and as the 2nd in Greece for the year 2017, with 3.2 million visitors and the 19th in Europe for 2018, with 3.4 million visitors.
The Arab traders from al-Andalus (Iberia) who founded the Emirate of Crete moved the island's capital from Gortyna to a new castle they called rabḍ al-ḫandaq (ربض الخندق, "Castle of the Moat") in the 820s. This was hellenized as Χάνδαξ (Chándax) or Χάνδακας (Chándakas) and Latinized as Candia, which was taken into other European languages: in Italian and Latin as Candia, in French as Candie, in English as Candy, all of which could refer to the island of Crete as a whole as well as to the city alone; the Ottoman name was Kandiye.
After the Byzantine reconquest of Crete, the city was locally known as Megalo Kastro (Μεγάλο Κάστρο, 'Big Castle' in Greek) and its inhabitants were called Kastrinoi (Καστρινοί, "castle-dwellers").
The ancient name Ηράκλειον was revived in the 19th century and comes from the nearby Roman port of Heracleum ("Heracles's city"), whose exact location is unknown.
Heraklion is close to the ruins of the palace of Knossos, which in Minoan times was the largest centre of population on Crete. Knossos had a port at the site of Heraklion (in the Poros-Katsambas neighborhood) from the beginning of the Early Minoan period (3500 to 2100 BC).