Palace of Cerro Castillo, Presidential residence in Viña del Mar, Chile

The Palace of Cerro Castillo is a three-story residence with multiple terraces and a basement level containing reception and dining halls that overlook the hillside. The building combines functional spaces with viewpoint areas designed for both administration and official ceremonies.

The palace was built between 1929 and 1930 on the site of the former Callao Fort while Carlos Ibáñez del Campo served as president. The project took shape during the Great Depression and marked a period of significant change in Chilean government structures.

The hill was called Primera Hermana in colonial times, and the palace takes its name from the Callao Fort that once stood here; the fort's cannons still decorate the gardens. Since Congress moved to Valparaíso, the building has served as the president's meeting place with parliamentarians. By tradition the president-elect spends the night of March 10 here before taking office in Valparaíso.

The palace can be visited during specific opening hours, allowing visitors to explore the gardens and see old cannons from the former fort. The property sits on a hillside in Viña del Mar, so comfortable walking shoes and a bit of fitness help when exploring the grounds.

The top floor has two towers holding the president's private office, library, radio room, and an observatory with views across Viña del Mar. These spaces served not only administrative purposes but also provided retreat areas with sight lines over the city and coastline.