The Sicilian Expedition was an Athenian military expedition to Sicily, which took place from 415–413 BC during the Peloponnesian War between Athens on one side and Sparta, Syracuse and Corinth on the other. The expedition ended in a devastating defeat for the Athenian forces, severely impacting Athens.

Sicily is the largest and most populous island in the Mediterranean Sea and one of the 20 regions of Italy. It is one of the five Italian autonomous regions and is officially referred to as Regione Siciliana. The island has 4.8 million inhabitants. Its capital city is Palermo. It is named after the Sicels, who inhabited the eastern part of the island during the Iron Age. Sicily has a rich and unique culture in arts, music, literature, cuisine, and architecture.