THU⁄FRI, July 9th and 10th 09 Improv Everywhere is known for their Performances in New York and their movies on You Tube. … More under http:⁄⁄improveverywhere.com⁄. If you want to partecipate to their mobile action in cologne please contact christine [dot] nippe [at] koelnischerkunstverein [dot] de.