Water interacts with light in different ways: absorbing, reflecting, refracting and bending it. This book explores different water conditions through the lens of architecture to reveal the interrelationship between the natural phenomena and our spatial experience. Set in a Danish context, there is a particular intimacy with water that is deeply embedded in the collective identity – water is perceived as something familiar, a fundamental life source and continuous source of inspiration. Water is understood not only as a physical element but also as a cultural and emotional condition, influencing how space, light and materiality are experienced.