Opportunity In Amsterdam West many inhabitants have a migration backÂ ground. The design empowers them to make use and take care of public space. The adjacent canal is cleaned in a park strip by helophytes and offers the inhabitants a refreshing swim. Benefits of the people in contact with nature The inhabitants have the opportunity to spend time in nature. The nature in the public space is at work. By purifying water through the helophyte roots it provides an important ecosystem service.