Landscape architect Gustav Lange has been one of the most successful designers in the 1990’s in Germany. Lange is well-known for following design principles that are based on formal-geometrical visual arts while his intricate and multi-layered design philosophy is much less revealed and studied. The purpose of this paper is to synthesize knowledge on Lange and key elements of his overarching personal design philosophy. Information was provided through Lange’s rare written comments and descriptions of projects, and occasional public talks. This information was supplemented through images of built and unbuilt work of key projects. Three leading, correlating themes and concepts could be identified to be key to Lange’s design philosophy: the entertaining a dialogue of nature and culture, the inclusion and legibility of historic layers, and engaging interstitial space and coincidence. The paper adds complimentary knowledge on Lange’s focus on form-led design language and compositions. His key, personal themes are leading elements of his design philosophy and can be traced from large to detail scale. While this study adds material for further research on Lange, it also reinforces the necessity of thinking in larger dimensions, contexts, and concepts for entertaining discussions about meaning and purpose in designing public landscapes.