Gotland

Gotland is Sweden's largest island, sitting in the central Baltic Sea roughly equidistant from the Swedish and Latvian mainlands. Like all Baltic coasts, its astronomical tidal range is negligible — under 10 cm mean range. Water level is controlled by wind, atmospheric pressure, and the slow exchange of water through the Danish straits. A prolonged westerly raises Gotland's east coast by 0.3–0.5 m; an easterly does the reverse on the west coast at Visby. The limestone geology of Gotland is distinctive: the island's flat interior is underlain by Silurian limestone that outcrops at the coast as raukar — sculpted sea stacks and rock pillars that concentrate photographers and kayakers. Visby is a UNESCO World Heritage walled city; Klintehamn is the natural harbour on the southwest coast; Ljugarn is the main east-coast resort village.