The project concerns the upgrading and modernisation of the “Trianon” building, which is at a hub in the old town of Nafplio, on the north-east side of the central Syntagma Square, which is the “centre of weight” of the old city. Together with the Archaeological Museum and the “Vouilletirion”, it is part of the mesh of the buildings of the old town where the journeys of visitors cross. In the old town there are many buildings characterised as newer monuments or listed, mainly buildings of a much smaller scale, private or public, which host museums, business uses and private residences, but there are scarce buildings/monuments of large size that can accommodate various uses. The only other building that is often used for various events is the Bouleuterion, which does not have modern equipment or accessibility for people with disabilities, and is located a short distance away.In the context of this project, there will be improvements to the upgrading and modernisation of the “Trianon” building in order to make the central square of the old city more attractive and create an additional pole of attraction. Due to the absence of public closed multi-use space from the city and the area, the preserved and well-established building of “Trianon” can contribute positively to the cultural as well as the tourist capital of the region. It will be an important and integral part of a network of actions, whose final result will be the formation of a properly equipped multipurpose public space, unique in the Municipality of Nafplio, which will host conferences, educational activities of all levels of education, theatrical events, art exhibitions and other similar actions.