Iglesia Catedral (Cathedral).
Address: 24 de Septiembre y Congreso.

The Cathedral occupies the site of the old Mother Church which was part of the city after its second foundation in 1685. As opposed to the humble first building of the mother church, the Cathedral introduced a style previously unseen in Tucumán, the Neoclassicism; and was regarded as the best church of the country in the times of the Confederation.

It was designed by Pedro Delgare Echeverry, a French architect; its interior being decorated by the French painter, Féliz Revol. It was blessed by famous Fra Mamerto Esquiú.

In 1941, the Cathedral was declared to be a National Monument.

Inside is the wooden cross used in the city foundation, as well as old images of the vice-patrons of Tucumán: Saint Jude Tadeus and Saint Simon, and other later elements like the splendid Saint Michael or the Virgin of Carmen and the graves of renowned priests, among them, the bishops José Eusebio Colombres (founder of the Sugar Industry) and Miguel Moisés Aráoz; since 1895, a box grave at the entrance has kept the remains of Tucumán-born General Gregorio Aráoz de Lamadrid, a national hero of the independence war period.

Besides, it has a small museum where valuable ornaments and clergy garments from previous centuries are exhibited, as well as missals, ancient books, colonial images and furniture and some significant Cuzco paintings.