Kingdom of Sardinia and Aosta, dynastic possessions since the 11th century, the Principality of Piedmont (a possession built up in the 13th century), and the County of Nice (a possession since 1388). While in theory the traditional capital of the island of Sardinia and seat of its viceroys was Cagliari, the Piedmontese city of Turin was the "de facto" capital of Savoy. When the mainland domains of the House of Savoy were occupied and eventually annexed by Napoleonic France, the king of Sardinia made his permanent residence on the island for the first time in its history. The Congress of Vienna (1814–15), which
Kingdom of Sardinia of Savoy added Piedmont to their main segment of Savoy, with a capital at Chambéry (now in France). Other areas remained independent, such as the powerful communes of Asti and Alessandria, and the marquisates of Saluzzo and Montferrat. The County of Savoy was elevated to a duchy in 1416, and Duke Emanuele Filiberto moved the seat to Turin in 1563. The Spanish domination of Sardinia ended at the beginning of the 18th century, as a result of the War of the Spanish succession. By the Treaty of Utrecht of 1713, Spain's European empire was divided: Savoy received Sicily and parts