There are certain things in life that takes its own time to get an appreciation for. Stuff like coffee, wine, classical European paintings, old cathedrals, or famously, modern art. You need to just work hard at it, keep trying, learning, and you'll eventually start to see the beauty in it.
Sagrada Familia is none of those things though. Its beauty requires no interpretation, no thinking nor background knowledge nor past acquaintance required. It's pornography of saturated light and stone -- it's viscerally beautiful in the way that gets a screaming toddler to shut up and try to reach for the glistening beams of sunlight peeking in through the rainbow coloured stained glass, vibrant in the way the colour doesn't let you even walk by it because if you try to, you hurt your neck and you end up running into things.
What is in the photo is just one minor part, every part is a different colour, and it has all colours of the rainbow. I think I ended up staring into this blue green for a fairly embarrassing amount of time, and I can't even take a picture of it as it looks because the colour is literally outside Adobe RGB. So until you make it there to Barcelona personally, this one will have to do. I'm a pretty hard man to impress at this point, but I think this might be my favourite building of all time.