Beautiful blue-green water can be found all around the island of Sardinia. In the 1960s, the Aga Khan made the Costa Smeralda (emerald coast) the playground of the rich and famous by developing land around his favorite beach (Spiaggia del Principe). We came to the city of Palau on the northern coast to see for ourselves what the fuss was about, and we weren’t disappointed. Although the Aga Khan developed his yacht club at Porto Cervo (one of the wealthiest towns in the world)