The river-cities of XX century represented the values of that time. Just like the industries, they should be standard, segmented, functional. In the scale of machines. In the liquid modernity, the world is not fixed anymore, so why should the river banks be? Nowadays we talk about diversity, singularity, democracy, culture and sustainability, how is the shape of the city of our times? Rivers are an important piece in the equation: they are the connection between nature and urban centers. Cities are human habitats. Let’s improve our cities, by design.