This research aims to create new ideas and methods for correlating old and modern architecture. To achieve the research goals, the analyzing study for more recent 5 architectural Omani products and 10 famous architectural examples from all over the world had been done. The main points of analysis are: The different ways of combining Authenticity with contemporary in a way that preserves the historical value of the building in Omani architecture; Contemporary architectural trends (such as sustainability, deconstruction, Functionalism, and organic architecture); and the methods of linking Heritage with contemporary architecture were studied (Contrast and Separation, Correlation with Heritage, Clear Revival, Selection and Collection, Revival, and Abstraction). The main results of the current research work are to focus on and browse the different ideas and methods for linking Heritage with contemporary architecture: contrast and separation, correlation with Heritage, clear revival, selection and collection, and revival and abstraction. Also, the present works recommended using the proposed flow chart to correlate old and new architectural forms. Finally, the most important conclusion of the current work is the relationship between most of the buildings designed based on sustainability, Functionalism, and deconstruction trends during the design process and for organic architecture, it was not used extensively in contemporary buildings, also, for linking heritage methods it was widely used, contrast and separation, correlation with Heritage, selection, and collection, but clear revival, revival and abstraction are used in a simplified manner in case study buildings.