The Greek Island Group is composed of three distinct island groups: the CYCLADES, the Ionian, and the Sporades. The CYCLADES are a group of islands located in the Aegean Sea, south of mainland Greece. The Ionian Islands are located in the Ionian Sea, off the west coast of mainland Greece. The Sporades are a group of islands located in the northwest Aegean Sea, east of mainland Greece. All three island groups are popular tourist destinations, offering stunning beaches, ancient ruins, and vibrant nightlife.