Because I have been slack, and I am still slack, here are a few hasty photos.
This is a tapas bar in Seville. You order at the bar and they take the piece of chalk which is floating in the beer run off and write your bill on the bar in front of you, adding to it when you order more stuff. When you pay they rub it off with a dirty rag.

This was on our mega touristy night in Seville. We saw Flamenco (pictured below) and ate paella and drank sangria, quite an achievement, and only set us back about a million euros.

Mesquita in Cordoba. The catholics liked taking over moorish (muslim churches/palaces)buildings and wacking christ all over the shop.