Setas de Sevilla

The wooden mushrooms, I've no real idea why they were built. But yesterday morning they were full of swifts; swooping in and out, even I managed to catch them in a photo. I do believe they had some nests there, I am 90% sure I saw a swift actually land, and that's the only reason they'd stop, as far as I know. It was magical.
Busy day, full of nice things to do, with lunch in Seville and bus back to Portugal.
Apologies if I don't make sense, a bit of a migraine today which leaves me a bit funny for a little while.