Casona de Las Condes, National monument in Las Condes, Chile.

Casona de Las Condes is a mansion in Santiago featuring adobe walls, wooden roofs, and a stone and clay chapel located at Fernández Concha 700. The building contains multiple rooms and spaces arranged around a courtyard with surrounding gardens.

In 1579 governor Rodrigo de Quiroga granted a 16-block merced to conquistador Antonio Díaz de Rivera, whose estate passed to Martín de Zamora in 1587 and was bought by Ascencio de Zabala in 1639. In 1675 the hacienda had vineyards, mills and enslaved African workers. The Sierrabella title came from the San José de la Sierra estate, and the casona was declared a Historical Monument on 21 June 1982.

The mansion displays 18th-century colonial architecture with adobe walls and wooden details that remain visible throughout its structure. These building elements define its appearance and convey how people constructed homes during that era.

The grounds are typically accessible by foot and offer space to explore the exterior and gardens at a leisurely pace. Visitors should check opening times beforehand since access may vary depending on university activities on the campus.

The name of the commune comes from the title of Count of Sierrabella, granted by King Charles II of Spain to Diego Cristóbal Mesía y León Garavito; the dowry of María de Torres, heir to the estate, helped finance that honour. The title itself took its name from the San José de la Sierra hacienda.