Clean drinking water has always been a problem to some parts of the world and to produce clean drinking water requires some energy that will definitely costs us a lot. The Synchronicity Island by Jakub Szczeany of Centrala is definitely a great answer. Synchronicity is a floating island that purifies river waters with the use of kinetic energy. Using numerous exercise machines, the river water pass through four filters that are attached to the exercise machines and will then be stored in four tanks before being returned to the river. With this wonderful eco-friendly architecture, we can now expect to have clean drinking water without spending too much on electricity.