Evening at Le Grande Arche

Inside the awesome Grande Arche at Paris's La Defense. Its an old one from 2009, that's the last time I was in France and this competition has got me looking through digi files from that time and now I keep finding pictures I'd forgotten about.
K10. The EXIF gives the focal length as 50mm so this must have been either the DA* 16-50 or the DA* 16-50.