Kos lies just off the coast of Turkey in the Dodecanese, a long, narrow island that combines some of the easiest beaches in the Aegean with a lively harbour town shaped by 2,500 years of history. The island's relatively flat profile makes it one of the most cycle-friendly destinations in Greece, with paved bike paths connecting the capital to neighbouring villages and beaches. That accessibility, together with a long summer season and a direct flight network from across Europe, has made it one of the most popular family destinations in the country.

Kos Town, on the north-east coast, is the obvious starting point. The harbour is overlooked by a 14th-century Knights of St John castle, the streets are lined with ancient ruins from Greek, Roman and Byzantine periods, and the so-called Plane Tree of Hippocrates marks the supposed teaching spot of the father of medicine. Whitewashed lanes lead inland to the Asklepion, an ancient healing sanctuary perched on a hillside with panoramic views toward Turkey. The town itself is small enough to explore on foot and lively enough to spend several evenings in.

Beyond the capital, the island spreads out into a series of beach areas. The south coast has the most dramatic scenery, with the headland village of Kefalos and the deep bays of Paradise and Camel beaches. The north has long shallow stretches at Tigaki, Marmari and Mastichari, popular with families. Expect a mix of large family-friendly resorts, adults-only suites along Lambi and Psalidi, and a steady supply of villas, apartments and beachfront hotels right across the island.