[citation needed] This name was used shortly after the disappearance of the old street of Zaragoza due to the demolitions necessary to form the open space that constitutes the square today.

As citizens did not get used to the new name and continued to use the previous name "Plaza de la Reina", the city council decided to use the old name again, excluding the original name of Queen Mary of Mercedes.

As a result of this seizure, the monastery of San José and the convent of Santa Tecla are demolished to create an opening for the Calle de la Paz.

In 1911 a plan was proposed by Federico Aymami that would extend a boulevard from the Puente de Real to the northeast corner of the current plaza.

[4] In 1928 Javier Goerlich proposed a plan that was similar to Ayamai, but focused on the south end of the current plaza and including the demolition of Santa Catalina Church, but not the belfry.

[9] On 23 October 2020, the Ayuntamiento or City Hall approved a plan and awarded contracts for a €10,782,070 to UTE Escario Arquitectos-Tomás Llavador Arquitectos e Ingenieros-Auravall-Llogaritme and Edifesa will be in charge of project management.

[14] The completed plaza includes a new public restroom and removable awnings in the summer to supplement the shade provided by the 115 trees.