Lesbos has a predominantly rural character, uncommon for an Aegean island. The central valleys and slopes carpeted as far as the eye can see with olive trees, the unusually tranquil waters of its two sea-gulfs that flood the heart of the island like large lakes, the self-sufficiency of its stately villages and the relative beneficence of its mountain peaks all contribute to give the island a feel of domesticity, spaciousness and calm. From Antiquity, Lesbos has less to show than its neighbours: the beautiful Hellenistic mosaic floors, exhibited in the New Archaeological Museum, are for the visitor its most vivid relic. But from the Middle Ages on, its heritage is rich: Byzantine rural churches, important monasteries, many Ottoman buildings and, most conspicuous and widespread of all, the beauty and rich diversity of its villages. The hot waters of Lesbos are one of the island's greatest and most unusual attractions.