Castelinho, Historic building in Erechim, Brazil.

Castelinho is a five-storey timber building in central Erechim, the oldest wooden construction in the city, raised between 1912 and 1915 on stone foundations from the headwaters of the Dourado River. Two of its five levels are basements, so the street view shows three; the eaves carry carved wooden lambrequins. Its total floor area is 904.13 square metres.

The building was completed in 1915 during a period of urban expansion in Erechim, when the city was growing and modernizing. It represents the moment when this southern Brazilian settlement began transforming into a developing administrative center.

The building housed the Comissão de Terras, the state land commission that surveyed and sold lots, settled European immigrant farmers and opened colonial roads; it served 7,412 immigrants in its early years. Its name, Castelinho ("little castle"), comes from its castle-like look. Look for the lambrequins, the carved wooden valance boards along the eaves.

The building is located in central Erechim and is easy to reach on foot when walking through the city. The site is visible from the street and can be viewed from outside.

The five-storey structure hides two of its floors below ground: two concrete basements of 104.26 and 297.61 square metres sit beneath the timber ground floor. The legal timber came from Getúlio Vargas municipality, while the foundation stones were hauled from the headwaters of the Dourado River by Olinto Zambonatto.