Tupac Inca died about 1493 in Chincheros, leaving two legitimate sons, and 90 illegitimate sons and daughters. He was succeeded by Huayna Capac In the south, Huayna Capac continued the expansion of the Inca Empire into present-day Chile and Argentina and tried to annex territories towards the north in what is now Ecuador and southern Colombia. As Sapa Inca, he also built astronomical observatories in Ecuador such as Ingapirca. Wayna Qhapaq hoped to establish a northern stronghold in the city of Tumebamba, Ecuador, where the Cañari people lived. Ruins of the Inca city of Pumpu. Wayna Qhapaq used to spend time relaxing in the nearby Chinchay Cocha lake connected to the city by a river. In Ecuador, formerly known as the Kingdom of Quito, Wayna Qhapaq absorbed the Quito Confederation into the Inca Empire after marrying the Quito Queen Paccha Duchicela Shyris XVI in order to halt a long protracted war. From this marriage Atawallpa was born (1502 AD) in Caranqui, Ecuador. Wayna Qhapaq died in 1524. When Wayna returned to Quito he had already contracted a fever while campaigning in present-day Colombia (though some historians dispute this), likely resulting from the introduction of European disease like measles or smallpox