LifestyleDiner en blancTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoLifestyle08/24/2013August 24, 2013A huge picnic in the northern German city of Hamburg was attended by several thousand people all dressed in white. The idea dates back to the first diner en blanc which was held in Paris.https://p.dw.com/p/19STzAdvertisement