In this book, we address landscape architecture, from composition and construction, from the visual and the tectonic, from form and matter. With this, it is intended to configure a basic manual for the student who delves into the design of open spaces, inducing to approach both aspects -the formal definition and the constructive materialization- si-multaneously, which is the distinctive approach of design disciplines like architecture. The book is divided into two sections dedicated to form and matter. The form section starts with a typological classification of green spaces. It continues with an outline of the general bases for forms definition and the compositional elements involved in the project of open spaces. Afterward, each element is analyzed separately: paths and places, walls and fences, plant material,and forms of the water. In the section dedicated to the matter, the construction elements for open spaces are studied in successive chapters:terrain modelling,se-lection of plants, paving and edging, irrigation and drainage systems, lighting, furniture, and microarchitecture. Both sections include an analysis of a wide selection of international reference projects