Andros Island, Travel Guide and Environmental Information. History, Vacation, Holiday, Environment. Andros, the second-largest island of the Cyclades, has a long and proud seafaring tradition and, conversely, is a walker's paradise. Its wild mountains are cleaved by fecund valleys with bubbling streams and ancient stone mills. A lush island, springs tend to be a feature of each village and waterfalls cascade down hillsides most of the year. It's worth renting a car to get out to the footpaths, many of them stepped and cobbled, which will lead you through majestic landscapes and among wildflowers and archaeological remnants. The handsome main town of Hora, also known as Andros, is a ship-owners' enclave packed with neoclassical mansions