Between Santiago's Central Post Office and the Municipalidad, the National History Museum (Museum Historico Nacional) is housed in what was once the Palacio de la Real Audiencia, which was designed by Juan Jose de Goycolea y Zanartu and built by the Spanish Empire between 1804 and 1807 to house the Royal Courts of Justice.
Today the grand old rooms are dedicated to showcasing the eclectic remnants of Chile's past — the exhibits are divided into the themes including Mapuche silverwork, colonial furniture and art, textiles, weapons, and photography. And on a visit, you'll see everything from sewing machines to period clothes and furniture.
The ground floor is dedicated to conquest and colony, and upstairs you'll learn more about Chile's struggle for independence through to the industrial revolution and the 1973 military coup. But the only evidence you'll see of Pinochet is a stash of his presidential sashes.
On Plaza de Armas, the National History Museum is open from Tuesday to Sunday from 10am to 5:30pm. Entrance costs CH$600 but is free on Sundays. The nearest metro station is Plaza de Armas.