Cagliari, overlooking the Golfo degli Angeli, is an ancient city founded by Phoenician traders. Long the heart of Sardinia’s political, economic, tourist and cultural life, it spreads across seven hills: Castello, Colle San Michele, Colle di Bonaria, Monte Urpinu, Monte Claro, Tuvu Mannu and Tuvixeddu. The city, which has preserved soaring towers and sections of the massive curtain walls which once encircled its medieval Castello district, has the largest and most important Phoenician necropolis in the Mediterranean, whose finds are on show both at the city’s Archaeological Museum and at the British Museum in London. The Botanical Garden, a green oasis in the heart of the old city, has a wide variety of tropical and Mediterranean plants. Cagliari is also a birdwatcher’s dreamland, thanks to its huge wetland areas of Santa Gilla and Molentargius, protected by the EU and the Ramsar Convention, with a rich and diverse wildlife, dominated by large colonies of pink flamingos.