Introduction"Waste not, want not" is an expression that has become increasingly relevant in recent years, as economic influences and factors have forced many to reduce budgets and make the most of what that we have, rather than constantly replacing the old with the new. This saving attitude extends to architecture in the form of adaptive reuse of buildings and their interiors. Today, the strategy of converting an old building into something more suited to contemporary needs is a way to create a contemporary interior space, which respects the history and heritage of the building. Adaptive reuse, by definition, distances buildings from their historic function and often from their historical significance. Buildings are modified to take on new functions for which they were not initially designed and built. A change in the function of the building or site can easily transform the identity and behavior of users when they find themselves within the new interior or space. Throughout this discussion I will attempt to address the relationship between a site's identity and the alteration process using the adaptive reuse strategy. Adaptive and Reuse/User Perceptions Adaptive reuse is the process of changing the function of a building to meet the changing needs of its users. This strategy is explored in the book How Buildings Learn: What Happens after They're Built by Stewart Brand (Penguin Books, New York 1995). This book also investigates what happens to buildings over time and how it can be reinterpreted into something new. These reimagined old buildings often represent faded memories of the past and have large amounts of character that comes from age and use, which cannot be reinterpreted today. Adapting a building to a new need will alter the… center of the card… breathes new life into the space and brings light to the public in places gone by, perhaps not noticed before. I believe that the idea of ​​using these sites as works of art, changing users' preconceptions in the space and provoking certain sensations is necessary in the design concept. It will not be determined by what feelings are provoked, whether these feelings are happiness, fear, fear and discomfort or by the feeling of being part of something like a community. A new life for neglected sites and buildings will be able to transform these sites into spaces full of urban vitality. The spaces being transformed could be infinite, including communities, parks, streets, buildings and interiors. Communities that accept and adapt to changes in community lifestyle will benefit greatly from community spirit and the perceptions of others in the community.