The Chapel of Sant Blai is located immediately south of the urban core of Pedreguer, at the foothills of the southernmost mountain mass in the area. It can be reached on foot by following the classic zigzag Calvary path that starts on Avinguda de Maria López, by using a staircase that begins on Carrer de L'Ermita, or by vehicle through the steep Carrer del Passatge.

Also known as the Calvary Chapel because it marks the end of the Stations of the Cross (Via Crucis), and popularly referred to as the Chapel of Sant Blai, it was built in the second half of the 18th century. However, the current building is a recent reconstruction following significant damage caused by a fire. Its current state of conservation is good.

It stands alone, facing a terraced esplanade, boasting excellent views extending to where the Stations of the Cross are, and next to a statue of Sant Antoni Abat. The entrance to the chapel is preceded by a wide stone staircase. It is a whitewashed building with ochre-coloured decorative details, a tiled roof, and a flat-topped dome rising above a drum with two windows.

It has a preceding porch which is lower than the chapel itself, with an independent roof, accessed through a semi-circular arch flanked by windows of the same style. There is another side entrance on the left side with a grated opening, similar to the one at the front. Passing through this atrium, one enters the chapel through a rectangular wooden door.

The chapel is circular with a semi-spherical vault and two side chapels beneath semi-circular arches. The sanctuary has two additional spaces, one dedicated to La Mare de Déu de La Solitud [Our Lady of Solitude] and the other to the sacristy. A crucifix presides over the altar, while the patron saint, Sant Blai, is only depicted in a painting, as his image is kept throughout the year in the parish church and is only placed in the hermitage for two days during his festival.

On the Feast of Sant Blai, February 3rd, and during the eve, a popular festival known as "Porrat de Sant Blai" is celebrated. On the first day, the image of the saint is brought with music and fireworks from the parish church to the chapel, where it remains until the next day when a Mass is held in the small chapel. In the evening, the saint is returned to the town with music and fireworks. Local tradition dictates that all pilgrims must ring the chapel's bell upon arrival.

The hermitage also opens its doors on the feast day of Sant Antoni Abat, January 17th.