Abstract: Based on spatial-temporal relationship and experience, this article discovers the threshold and interface between landscape and architecture. In addition, to the reflection of building simply as shell unrelated to surroundings, the rich experience and sense of perception in threshold is focused. Through the extension and development of the concept of “thickness” and with discussion of “time-space compression” by David Harvey and “space-time” by Sigfried Giedion, two basic formations of landscape-architecture interaction—“extension: stretching” and “compression: revealing”— are put forward. This article takes several case studies, and analyzes the interaction between building and landscape from perspectives of both organization and materials. Based on two types of spatial perceptual processes, the ways of “deducing” and “instantaneous generating” are discussed. Based on the analysis of 4 contemporary landscape design cases, this article underlines that the initiative of landscape design should be valued. Finally, the basic approaches and multiple utilizations of time-space organization are summarized.