What Happened in Rotterdam tells the story of a previously bleak and bombed harbour city that has benefitted from its ‘accidental’ erasure by transforming itself into what is now being called one of the coolest places on the planet.

As a sociologist and an artist, Charlie Koolhaas combined photography and writing to uncover the irrepressible creativity of the Netherlands most diverse city - where life casually reveals the undeniable vitality, successes and failures of Europe’s multi-cultural project at a moment in history when it’s under siege.