The noble Cru and Montenegro family lived from the 15th century onwards in the Pazo located in the southern part of the square.

[5] At the end of the 19th century, the brothers Andrés and Jesús Muruais became the owners of the Pazo de los Cru y Montenegro, making the square a place of reference thanks to its large library, located on the ground floor of the pazo and containing, among other things, works of European literature (especially French), art books and magazines, which were extremely important at the time as exhibitors of what was happening in the cities and in the artistic movements.

[9] At the end of the 19th and beginning of the 20th centuries, Valle-Inclán, a friend of Jesús Muruais, regularly visited this library and took part in the famous meetings held there.

[11] The square has a trapezoidal shape and the streets of Sarmiento, Palma, Don Gonzalo, César Boente and San Xulián converge on it.

[12] The square is overlooked on its eastern side by a large century-old magnolia tree, which is located in the urban garden of the Pazo de los Cru y Montenegro.

[14] On the south side of the square is the Pazo de los Cru y Montenegro, which crosses Don Gonzalo street with its pointed arch.