It is the most magnificent church in Oaxaca, with a masterfully carved baroque exterior and almost every square centimetre inside covered in 3D relief.
The Zócalo is the ideal site to begin taking in the ambiance of Oaxaca because it is free from traffic, is covered by large trees, and is enclosed by elegant portales (arcades).
It is one of Oaxaca's most ornate and intricate colonial-era buildings, yet it is frequently disregarded in favour of cathedrals and monasteries in the vicinity of Mexico City.