Are two buildings with rectangular plants, blank facades.

Located within the Serra do Açor Protected Landscape Area, near the village of Benfeita, Fraga da Pena is a kind of miniature replica of Poço do Inferno in the Serra da Estrela mountain range. As the waters of the Barroca das Degrainhas stream flow towards the Ribeira da Mata stream, they encounter a drop of more than 20 meters, forming a waterfall and, below, a small lagoon. The rock formation is entirely covered in moss and surrounded by vegetation. The temperature there, even in summer, is extraordinarily low.

Prehistoric settlement dating back to the Bronze Age, where a large semicircular defensive structure is visible. Inside, ceramic objects, arrowheads, necklaces, stone axes, and more were found. It lies at an altitude of approximately 750 meters.

Font with a spout, a small rectangular tank and a stone structure that stretches from the sides, forming two banks.