Fazenda Serra Negra, Historic farm in Aroazes, Piauí, Brazil

Fazenda Serra Negra is a rural estate on the border of Aroazes and Santa Cruz dos Milagres, Piauí. Its stone-walled main house covers 438 square metres and has fourteen rooms, twenty-five wide windows, an oratory and 80 cm thick stone walls. The roof uses carnaúba rafters and wide four-slope tiles, and stone corral ruins stand nearby.

The property originated during the Portuguese colonial period as a center for agricultural production. It contributed to the economic development of the Aroazes region and has been preserved with official heritage recognition.

The name is attributed to Luís Carlos Abreu de Bacelar, called Serra Negra, a landowner remembered for cruelty to enslaved people. A local legend says a slave was cut with a saw, giving the farm its name. Each 27 July the chapel of Sant'Ana hosts a feast with religious and secular celebrations, drawing people from the region. A statue of the saint, brought from Portugal, stands in a chapel inside the main house.

The site is accessible via municipal roads and offers the chance to view the agricultural structures and buildings on foot. For better understanding of the layout and its history, a guided tour or advance inquiry at local tourism offices is recommended.

The property has received an official FUNDAC-PI Good Class designation, underscoring its importance for preserving Portuguese agricultural heritage. This classification makes it a valued example of how such estates maintained their original structures across the centuries.