The local cultural organization ILAEK is organizing a guided visit to two of Heraklion's most significant historical sites: the Historical Museum of Crete and the Venetian Fortress Koules. The Historical Museum of Crete traces the island's history from early Christian times to the 20th century and houses works by El Greco. The Koules Fortress, standing at the entrance of Heraklion's old harbor, dates to the 16th century and offers panoramic views of the seafront. Both sites are centrally located and easily walkable from the city center. Tourists already planning to visit Heraklion can independently explore these landmarks during regular opening hours. Check official museum websites for current schedules and admission fees before visiting.