Villa Clara Cays, covering more than 77 844 hectares, are a veritable wildlife refuge and provide a habitat for some 248 species of plants. The most precious jewels are Cayo Las Brujas, Cayo Ensenachos and Cayo Santa Maria, renowned for their immaculate landscape of incredible beauty, with sugary-white sand beaches and crystal-clear waters, fringed by autochthonous vegetation and connected to Caibarien, a small fishing town on the Cuban mainland, by a 48 km causeway stretching over the sea -accorded an international prize for its harmonious combination of nature and engineering in an area declared a World Biosphere Reserve- thus enabling visitors to access the cays directly from Santa Clara City, site of the international airport. The causeway has a total of 46 bridges especially designed to allow the flow of sea water, therefore protecting both the biodiversity and sustainability of the area.