Vigo's co-cathedral stands at the top of the old town, a neo-Gothic church built in the early 20th century to replace the medieval structure that was demolished to make way for the expanding city. It is a concatedral — sharing episcopal duties with the cathedral at Tui — rather than the primary seat of the diocese.
The building is large and well-proportioned, with a striking rose window and a plain stone interior that benefits from good natural light. It is not as ancient or architecturally remarkable as the churches in Santiago or Pontevedra, but it sits at the heart of the old town and makes a good landmark for orientation. The square in front of it has decent cafe terraces and is a quieter alternative to the more tourist-heavy areas below.