Small square located in the place known in the Middle Ages as «Fonte Arcada», the former site of one of the city gates.

A modern fountain centers the space, crowned by a sculpture with a children’s theme, the work of Antonio Faílde. On one of its sides is the chapel that gives it its name: Saints Cosme and Damián. This 16th-century building houses one of the city’s most curious museums, the Arturo Baltar Exhibition Space and his Baltar Nativity Scene: more than a hundred baked clay figures that recreate traditional scenes of the Galician rural world and the Ourense of yesteryear.

The chapel was commissioned in 1521 by the master surgeon Juan de Lares in honor of Saints Cosme and Damián, patrons of the medical profession.

Its façade, in Plateresque style, ends in a triangular gable and on one side there is a small bell tower.