The smallest Canary Island, El Hierro, is focusing on eco-tourism. Instead of high-rise hotels and shopping malls, visitors can enjoy unspoiled countryside and coastline.El Hierro can't begin to rival Gran Canaria and Tenerife as a holiday destination - but it doesn't even want to. Residents actually prefer to keep tourism to a minimum. They're proud of their sustainable local agriculture - every product that comes from El Hierro will soon be organic. UNESCO has made the island a biosphere reserve for its focus on ecological alternatives. The other Canary Islands are also learning from El Hierro's approach.