Saare

Kuressaare's Bishop's Castle, built by the Bishopric of Ösel-Wiek in the 14th century, is one of the best-preserved medieval fortresses anywhere in the Baltic region — its stone walls, moat and central keep survive largely intact rather than as a ruin requiring imaginative reconstruction, a rarity for a structure this old in a region with such a turbulent military history. The surrounding old town, smaller and quieter than Tallinn's, centres on a compact main square, and the town's spa tradition — Kuressaare has functioned as a resort destination since the 19th century, when its mud-bath treatments first drew visitors — continues today through several dedicated spa hotels built around that same mineral-mud heritage.

The Kaali crater field, roughly 18 kilometres from Kuressaare, formed when a meteorite struck the island somewhere between 3,500 and 7,500 years ago — a wide range reflecting genuine scientific uncertainty about the exact date — leaving a main crater roughly 110 metres across, now filled with a shallow lake, surrounded by eight smaller craters from fragments of the same impact. The site holds significance in Estonian folklore, with some researchers connecting it to ancient sun-worship mythology given the crater's scale and the impact's likely visibility across a wide area at the time, though this remains interpretive rather than settled.

Saaremaa's traditional windmills, historically used for grinding grain, survive scattered across the island's farmland — Angla, with a cluster of five windmills preserved together, is the most visited grouping, giving a concentrated sense of what was once a working technology across the whole island. Muhu, reached from the mainland ferry before a causeway carries traffic on to Saaremaa itself, is quieter still, known for its traditional thatched farmstead architecture and the 13th-century Muhu Church, whose interior murals survive in exceptional condition for their age. The pace across both islands rewards slowing down — cycling between villages, rather than driving point to point, is a genuinely popular and practical way to experience the landscape.