As a spanish, I love the design. The choice of building is strange but I'm ok with that. Almost all the large Spanish cities have Gothic cathedrals. In fact, the city where I was born has one built in the 16th century. I think that as we progress through the ages, we are going to have to get used generic buildings. I can imagine a supermarket for America or, you tell me, a great refinery for the Arabs.
Which makes me think that there may not be common religious districts for all cultures.
I was in Andalusia last year and I think Spanish cathedrals are unparalelled in their beauty (Polish cathedrals are, of course, second) - thus I had no issue with them being emblematic building.