The Mercado de la Ribera sits on the banks of the Nervion and is apparently the biggest indoor market in Europe. Certainly it has some of the most unique architecture, not to mention the variety of food and drink for sale within!
Looking along the ceiling of the Ribera Market towards the centre and this looks like it could almost be a prison - although nothing could be further from the truth.
This was a random fisheye shot but I quite liked it all cropped in and straightened!