These are the latest images of the Qatar National Convention Centre in Doha, designed by Arata Isozaki and RHWL's London office.
The facade forms the shape of the Sidra tree, the emblem of client Qatar Foundation. The centre will be completed next year and will be the largest of its kind in the Middle East.
The pictures are presented as a Flickr slideshow. You can click on an image to see the next in the series or select directly using the thumbnail images below.