The nine islands that make up the Azores are in fact the peaks of some of the world's tallest mountains, reaching from deep beneath the Atlantic. The once-uninhabited, volcanic archipelago now hosts thousands of tourists every year who flock to the islands for sun, sand and verdant mountain scenery. From the beaches of Praia da Vitoria to the bustling marina of Horta, to the bubbling volcanic ground "ovens" of Furnas, these islands offer unparalleled--and unusual--adventures to discover.