Query: What was the Valencia Cathedral called from 1866?
Context: The Valencia Cathedral was called Iglesia Mayor in the early days of the Reconquista, then Iglesia de la Seo (Seo is from the Latin sedes, i.e., (archiepiscopal) See), and by virtue of the papal concession of 16 October 1866, it was called the Basilica Metropolitana. It is situated in the centre of the ancient Roman city where some believe the temple of Diana stood.