Saenz Pena city or Ciudad Saenz Pena is a city located in the Chaco province of Argentina. It is the largest city in the province and serves as an important commercial, industrial, and cultural center. Saenz Pena has a population of around 170,000 people and is known for its parks, museums, and historical buildings. The city has a tropical climate with hot summers and mild winters. It is also home to the National University of the Chaco Austral.