House of Chica da Silva, Portuguese colonial mansion in Diamantina, Brazil.

The House of Chica da Silva is a two-storey colonial mansion built in the second half of the 18th century in Diamantina. Its structure uses square wooden posts, external walls of adobe and wattle-and-daub, internal walls of masonry with lime plaster, and a four-sloped roof. A lateral veranda has latticed panels and balusters in the Moorish style of the period.

The property belonged to Chica da Silva and João Fernandes de Oliveira between 1763 and 1771 during Brazil's diamond mining period. This era transformed Diamantina into a center of wealth and influence in the region.

The house displays Portuguese colonial architecture mixed with Brazilian adaptations, visible in wide wooden floorboards and distinctive ceiling designs. This blend shows how European building traditions adjusted to local conditions and climate in the new colony.

The house is open for guided or self-guided visits with free admission, and it now serves as the sub-regional office of IPHAN, Brazil's national heritage institute. The rooms hold an exhibition of contemporary paintings depicting Chica da Silva's life; there is no period furniture or original objects on display.

The property once contained a private chapel dedicated to Saint Quiteria, with only the doorway and cross remaining from the original structure. These fragments remind visitors of the deep religious devotion that wealthy families built into their homes during this era.