Machu Picchu in South America, one of the most visited tourist attractions in Latin America and the most visited in Peru. Machu Picchu has wet and dry seasons, with the majority of annual rain falling from October through to April. Machu Picchu is situated above a bow of the Urubamba River, which surrounds the site on three sides, where cliffs drop vertically for to the river at their base. The area is subject to morning mists rising from the river. The location of the city was a military secret, and its deep precipices and steep mountains provided natural defenses. The Inca Bridge,
Christianity in the 15th century Christianity in the 15th century The 15th century is part of the High Middle Ages, the period from the coronation of Charlemagne in 800 to the close of the 15th century, which saw the fall of Constantinople (1453), the end of the Hundred Years War (1453), the discovery of the New World (1492), and thereafter the Protestant Reformation (1515). It also marked the later years of scholasticism and the growth of Christian humanism and other developments of the early Renaissance. The eastern Emperor John VIII Palaeologus, pressed hard by the Ottoman Turks, was keen to ally himself with the West,