Estadio Único Madre de Ciudades

The stadium being built during January 2020

On April 13, 2018, Santiago del Estero's governor Gerardo Zamora, along with the Argentine Football Association (AFA)'s president Claudio Tapia, presented a new stadium project in the province, which was accepted. Both authorities signed an agreement for the stadium to host qualification matches for the Argentina national football team and to be nominated as one of the host stadiums during the 2021 Copa América, since Argentina and Colombia were organizing the event.

Another objective for the stadium is to be one of the potential hosts of the 2030 FIFA World Cup if the Southern Cone's bid is chosen as the winning venue to host it by FIFA.

Construction started in June 2018, and in July 2019, the Estadio Único was confirmed as one of the hosts of the 2021 Copa América. However, in November of that year, CONMEBOL questioned that nomination after seeing the low progresson construction. Finally, on December 3, 2019, the stadium was again confirmed to be one of the hosts of the final tournament.

After the draw, the stadium was scheduled to host two matches, between Uruguay and Paraguay and Chile national football team against Paraguay, on June 27. However, the immediate emergence of the COVID-19 pandemic worldwide disrupted the tournament's organization, so the cup was postponed to the next year. In May 2020, the stadium was chosen to host the Copa Sudamericana finals for three years, and in August, CONMEBOL gave the stadium a match between the Chile national football team and Paraguay on June 23, 2021.

The stadium was named "Estadio Único Madre de Ciudades" (in English, Mother of Cities's Stadium). This name was chosen as a tribute to Santiago del Estero, founded on July 25, 1553. As the oldest city of Argentina, it gained the nickname "Madre de Ciudades", which was used by the Spanish Empire before founding more cities across northern Argentina.

In 2010, the architect and former president of Estudiantes de La Plata, Enrique Lombardi, named the project as the winner of a local competition. The stadium was built on a site located to the north of the city of Santiago del Estero on the banks of the Dulce River. The land is surrounded by Carretero Bridge and the city's botanical garden, and is connected to the Tren al Desarrollo by a station.

The project itself consists of a cylindrical stadium with fully covered grandstands, with a capacity of 29,000 seated spectators. It includes VIP sectors, restaurant spaces and a covered parking lot with a capacity for 400 cars. In addition, the stadium was designed with a main access plaza, a sports museum and a press area. The design complies with FIFA, CONMEBOL and AFA standards.

The stadium is being built for the 2021 Copa América and the 2019 Supercopa Argentina between Racing Club and River Plate, without an official date.

Date	Time (UTC−03)	Group	Team No. 1	Res.	Team No. 2	Attendance
June 23	19:00	Group A	Chile	–	Paraguay	-
June 27	20:00	Group A	Uruguay	–	Paraguay	-
2021	-:-	2019 Supercopa Argentina	Racing Club	–	River Plate	-

The construction of the stadium received criticism by some parts of the press for being carried out in the midst of the economic crisis that plagued the country, the government's struggle to restructure Argentina's debt, which caused the decreasing popularity of Argentina's president Alberto Fernández. The stadium was also criticized for being considered a priority of the provincial government, ahead of the existing poverty situation in the province of Santiago del Estero. According to the INDEC, Santiago del Estero ranks first in the provinces in a critical state of unemployment throughout Argentina and ranks relatively low compared to other provinces on the Human Development Index.

• List of football stadiums in Argentina

Media related to Estadio Único de Santiago del Estero at Wikimedia Commons