Despite the importance of heritage places and the efforts being made to protect them, it may sometimes occur that the priorities of their conservation conflict with the requirements of development and investment projects that may be established near or in the same area of such places to fulfill some necessary needs for the society (such as constructing dams, roads, bridges, infrastructure networks, digging canals, mines, etc.) or to achieve some financial gains for the owners or investors (such as constructing residential complexes, hotels, commercial centers, office towers, entertainment places, etc.). In these cases the heritage of the society, which should be protected, stands against the development, which promises the people a better future. In this conflict the victory of one party will inevitably harm the other and society as a whole. There is no doubt that any development at the expense of heritage conservation is unacceptable. Similarly, any conservation practices which do not take into account the current and future needs of the surrounding society will make the heritage appears to be an obstacle to the development. This is the problem of this research, which aims at discussing the various factors and dimensions of this conflict, as well as the solutions that can be applied to resolve it, through the analysis of a number of international experiences and attempts related to the subject, to formulate a treatment strategy applicable in such conflict cases.