Palacio Cousiño is a 19th-century mansion built for one of Chile's wealthiest families, with European-inspired interiors that show how Santiago's elite lived during the nitrate and mining boom years. The architecture mixes French and Spanish influences, with rooms arranged more like a palace than a private house.
Guided visits focus on the restored interiors, furniture, and family history, making it a useful contrast to Santiago's civic and political landmarks.