Also known properly as Catedral de la Santa Creu i Santa Eulàlia. To me, these pictures are especially interesting as a contrast to yesterday's photos from La Sagrada Familia. This cathedral was built between the 13th and 15th centuries, and represents the context Gaudí designed the Sagrada Familia in.
I feel lIke I can see some of the influences Gaudí was responding to - the complexity of the arches, the rich detail on the exterior - but there are some important contrasts as well. All of the internal light here is from electric lights, and though the Edison bulb was contemporaneous with Gaudí, I'm pretty sure this cathedral was still lit by candles in his time - that is to say, it was mostly dark and murky at best. (Although, to be clear, I would loooove to see it only lit by candles... I'm sure it's beautiful)
I like to imagine Gaudi looking at the few small places where light came in through the stained glass and touched the walls, and extrapolating from there to the glorious light in the Sagrada Familia.