The Plaza de Concepción Arenal is an early 20th-century square in the Spanish city of Pontevedra, on the edge of the A Moureira area.

The square owes its name to the Galician writer and activist Concepción Arenal (1820–1893), who lived in Pontevedra at 27 Oliva Street between 1889 and 1890, where she organised a prestigious meeting of intellectuals.

On 17 July 1904, the Pontevedra City Council, on the occasion of the improvement of the street system in the area with the imminent opening of this bridge over the River Lérez and the Ria de Pontevedra, proposed the creation of a square at the junction of Alfonso XIII and Herreros streets, on a plot of land donated by José Riestra López, Marquis of Riestra.

[3][9] The square is semi-pedestrianised and has a circular configuration with several concentric circles in the paving, the central point of which is a pedestrian roundabout crossed by several paths, with five columns of floodlights, lawns and trees.

It anticipates rationalist forms and has a multitude of large, symmetrical windows set vertically to bring lots of light into the classrooms.