This paper is based on a content analysis, exploring international documents related to 'Historic Urban Landscape (HUL)' concept, which was introduced in the 'Recommendation for the HUL' and adopted by UNESCO in 2011. HUL, regarded as a new approach to heritage conservation, is expected to be an opportunity to harmonize the controversial issue in urban context, development and conservation, and also to lead a new paradigm of heritage notion, philosophy as well as method. This is because HUL ultimately accepts the situation that changes in historic urban area is inevitable. While previous studies have the point of view to understand HUL as the latest urban conservation concept, this paper applies 'landscape' perspectives, which were stressed primarily in HUL concept, in order to explain what the HUL approach means. This paper confirms that landscape conservation concepts have been evolved from "historic garden", to "cultural landscape" and then to "historic urban landscape" in the international documents, broadening the notion of landscape from a monument to everyday-life places. Consequently methods for urban conservation was shifted from preserving the original state to managing changes, respecting participation of residents and creative strategies. In conclusion, HUL approach is, after all, the management of changes in the urban context, which are concerned with future heritage. What's more, HUL, which is evolutionarily broadened its scope, lets us investigate the notion of heritage and heritage conservation methods.