Portuguese colonial architecture refers to the various styles of Portuguese architecture built across the Portuguese Empire (including Portugal). Many former colonies, especially Brazil, Macau, and India, promote their Portuguese architecture as major tourist attractions and many are UNESCO world heritage sites. Portuguese colonial architecture can be found in the plethora of former colonies throughout South America, North Africa, Sub-Saharan Africa, India, Oceania, and East Asia. During the 15th century, the Portuguese Empire laid its foundations across the world as the world's first modern colonial empire, and what would be the longest. The Empire came into existence in 1415, with the Capture of Ceuta, by the forces of Infante Henrique of Aviz, the "Navigator". This key victory initiated a century of Portuguese expansion and colonization of the African continent. In North Africa, the Portuguese conquered Ceuta, 1415, Alcácer Ceguer, 1458, Arzila, 1471, Tangiers, 1471, Mazagão, 1485, Ouadane, 1487, Safim, 1488, and Graciosa, 1489. In Sub-Saharan Africa, the Portuguese established and colonized Anguim, 1455, Cabo Verde, 1462, São Tomé and Príncipe, 1470, Annobón, 1474, Fernando Pó, 1478, São Jorge da Mina, 1482, Portuguese Gold Coast, 1482, and the Mascarenhas, 1498. It was also in the 15th century when the Portuguese established Portuguese India, conquering the Laquedivas and landing at Calicut, both in 1498. The Azores and Madeira would also be added to the Empire in 1432 and 1420, respectively. During the 15th century, the Portuguese Empire was expanding and laying its foundations, and the colonial architecture of this period was built following a militaristic and functional base. Most of Portugal's colonies were defended by military fortifications, today the highlight of Portuguese colonial architecture of the period. The Fort of São Jorge da Mina is a well-preserved example of 15th-century Portuguese colonial architecture. Beginning construction in 1482, the fort was, for a long period, the most sophisticated and impenetrable fortification in Sub-Saharan Africa.