You'll probably spot Our Lady of Mercy Cathedral from a distance before you actually find this important religious building. Pop inside if it's open or just take in the facade from the street.
This principal church is located in Calle Larga, a destination that has loads going for it! Santuario Teresa de Los Andes, Termas El Corazón, and Santa Teresa Sanctuary are other popular attractions not far away when you're done at Our Lady of Mercy Cathedral.