Carrying out interventions in historic buildings is a particular challenge due to the restrictions and prohibitions associated with respecting and preserving their form. The project 'ANAVATHMIZO' will address the challenge of energy upgrading of the Presidential Palace of the Republic of Cyprus and the City Hall of Heraklion Crete, the Venetian Loggia, and their conversion into standard ostentatious buildings from high-performance buildings, within the framework of the cooperation program "Greece - Cyprus 2014-2020". The overall goal of the project is to meet and serve the European and national goals for the transition to a low carbon economy. The result will be the increase of energy efficiency and Renewable Energy Sources utilization in the two historic buildings, and at the same time the development & application of innovative technologies and portable construction practices, the enhancement of sustainable mobility and the information and awareness of citizens and market players and society. in energy sustainability items. The main expected outputs are the two pilot energy upgrade projects of the two historic buildings, a charging station at the Presidential, printed and electronic project promotion materials, knowledge dissemination and awareness-raising activities (workshops, seminars, open events, etc.) Greece - Cyprus framework for the increase of the Energy Efficiency of public buildings of important architectural, historical and social value, a Project Guide etc. Beneficiaries will be the Presidency of the Republic of Cyprus, the Municipality of Heraklion which as owners of the upgraded buildings will save resources, the market players of the two areas that will incorporate new technologies and the residents who by applying the new knowledge will in turn save resources and will enjoy a better environment, while in the case of Nicosia there will be an improvement of mobility due to electrification. cross-border approach and cooperation. The exchange of architectural heritage management practices between the two countries is particularly important. The prototyping of the solutions will be done with the aim of portability and the facilitation of subsequent interventions in the large number of such buildings, public & private, in Greece and Cyprus.