La muerte de Hernán Cortés en Castilleja de la Cuesta Historical milestone · Castilleja de la Cuesta, Comarca Metropolitana de Sevilla, Seville Image of Castilleja de la Cuesta, not of the place itself. The conquistador Hernán Cortés died in 1547 in a mansion on Calle Real in Castilleja de la Cuesta; the building became a school run by Irish nuns in 1889. 1547 (muerte de Hernán Cortés); 1889 (conversión en colegio) Photo: Salvador Azpiazu (Public domain) What to see and do in Castilleja de la Cuesta