Vietnam
It is the undiscovered sister of Ha Long Bay. We sailed through its green waters and looming limestone karsts and saw only a handful of boats - all local fishing boats. If you want to sail on unpolluted waters and avoid touts book a trip through Ethnic Travel. They can arrange a homestay on quiet Van Don island where you cycle from the port. We had a boat between five passengers and was served delicious freshly cooked food on board.