鳥巢北京國家體育場 Bird’s Nest Beijing National Stadium (Panorama) / 中國北京體育建築之形 Sports architecture forms in Beijing, China / SML.20140502.6D.31746-SML.20140502.6D.31767-Pano.i22.C.360.00x79.32.P1 - http://www.flickr.com/photos...