Some 60km north of Oristano, BOSA presents an appealing picture of pastel houses huddled around a hilltop castle on the banks of the Temo River. Its attractions are low-key – wandering the mazy cobbled lanes of the medieval Sa Costa district up to the castle is probably the best way to spend your time – but it makes a pleasant, if sleepy place to hole up for a few days. Most of the tourist activity is concentrated in Bosa Marina, 2km west, where a crescent of sandy beach is backed by hotels, restaurants and bars.
Bosa’s old town centres on the cobbled Corso Vittorio Emanuele, the main street running parallel to the river and cutting through Sa Piana, the lower town. The cathedral sits at the Corso’s eastern end, by the old bridge, while to the north, the medieval lanes of Sa Costa, or upper town, straggle up the hill towards the castle.