Just across the water from Turkey, this Kos is known for its sandy beaches and classical antiquities. After your catamaran ride to its capital, Kos Town, you'll have the day to explore on your own. Prepare to be charmed by the town, where ancient and modern sit side by side. Dip into the shops and boutiques in the streets behind the harbour. Sip coffees in the square, admiring the huge plane tree - it's said that Hippocrates held lessons under it 2,400 years ago. And visit the 15th century Knights fortress, admiring the sea views from its battlements. History lovers will also want to see nearby Asklepieion. One of Greece's most important classical sites, its marble temples mark where the world's first hospital once stood. If you fancy some R&R, meanwhile, take your pick of the town's beaches. It shores are laced with sandy sweeps perfect for getting in some sunbathing and swimming before your catamaran ride back.