Named after the island, Corfu is the most famous city in the Ionian islands. Protected by citadel fortifications, its old city, designated UNESCO World Heritage, displays unusual Greco-Byzantine and Venetian architecture. Above the water stands Saint George’s church, looking uncannily like a classical temple. The picturesque Pontikonisi, a stone’s throw from the southern point of the town, is the legendary island where Odysseus landed.