Giethoorn, also at WaterReijk in the Netherlands. The village is only approachable by foot, bike or (shallow) boat. Life here takes place on the edge of water and land. More info about Giethoorn: WaterReijk.
This idyllic village has no roads, and the only access is by water over the many beautiful canals or on foot over its wooden arch bridges. The locals use punters to get around and cars have to remain outside the village.