Across Turku, which blends sites of the 18th century and modern constructions, there is an archipelago composed of thousands of islands that are easily accessible by ferries and steamboats. Born from the coast's erosion by a glacier, the Åland's archipelago rises from the Baltic Sea with more than 6,000 granite islands, covered with forests and lichens. The scenery and sites, with the castles, stone churches and windmills, really deserve to be seen. Only around a hundred of the islands have been inhabited (for five thousand years) meaning that the others are a representation of untouched nature, in its pure state.