Before 1534, Copacabana was an outpost of Inca occupation among dozens of other sites in Bolivia. The Incas held it as the key to the very ancient shrine and oracle on the Island of Titicaca, which they had adopted as a place of worship, adopting the veneration with which it was held by the Aymaras from time immemorial. At Copacabana, there were minor shrines in which the ceremonies of the Incas were observed along with those of the original inhabitants. When the Spaniards first visited the Islands of Titicaca and Loati, in 1534 and 1538, the Andean Cosmovision were abandoned and the Dominicans made Copacabana the centre of their missions. Non-monastic priests then replaced them at the instigation of the Viceroy Francisco de Toledo, and finally the mission and its annexes were entrusted to the Augustinians in 1589.