Sardinia's historic capital lies between the sea and the mountains on the south coast of the island. Climb up from the modern harbourside city to explore the picturesque upper town's old quarter - dominated by the Pisan fortifications, including the towers of San Pancrazio (1305) and the Elefante (1307) - the Cathedral of Santa Cecilia (13th century) and protected by walls nearly 1000 years old. Also visit the early Christian (5th-6th century) domed Basilica of San Saturnino. Or simply relax by one of the lovely beaches within easy reach.