Immortalized by Hemingway in “Islands in the Stream,” Cayo Guillermo is perched on Cuba’s north coast between the Bay of Dogs and the Atlantic. It is home to four all-inclusive resorts. Five miles of fine white sand and gorgeous, clear green waters, including the spectacular Playa Pilar, offer picture perfect sunning spots. Fantastic snorkeling and scuba diving opportunities beckon from more than six miles of coral reefs. Flamingos and many other birds live in its lagoons, forest and jungle.