Renowned for beautiful beaches, excellent diving and offshore banking, the Cayman Islands are a group of three islands situated between Cuba and Jamaica, only a 90-minute flight from Miami. Grand Cayman is the largest and most developed of the islands and the location of the capital, George Town. It is hard to believe that among the buildings that line George Town's harbour are 500 banks making up the world's fifth largest offshore financial centre. Little Cayman and Cayman Brac are 70 miles (113km) northeast of Grand Cayman and are much smaller and even more relaxed. Visitors don't come here in suits; the little business that goes on revolves around diving and catering for the world's best bone-fishing. Discovered by Columbus in 1503 and explored by Sir Francis Drake in 1586, it was not until 1670 that the islands came under British rule. They remain a British territory, and the Queen's picture is still displayed proudly, but the US exerts the dominant influence over what it considers its backyard. For years the islands were a base for pirates who delighted in the remoteness of Grand Cayman. A bonus was the island's absolutely flat topography, which ensures that its profile is practically invisible against the horizon, making it the perfect hide-away for nefarious characters.