This book shows how night redefines the framework of thought and action in the realm of the imaginary, of territorial planning and of the practice of landscape, the aim being to arrive at a contemporary urbanism based on perceptual experience. The book is structured in three parts: the first covers the originality and value of the experience of the nocturnal landscape for thought and creativity, the second defines infrastructure as the nocturnal landscape’s real scale and strategy, while the third illustrates examples of nocturnal contemporary architecture and landscape.