Underwater archaeological remains at the seabed define sites that are generally protected within Protected Marine Areas by the national and international institutional framework. The rigorousness and complexity of this framework, reviewed in the study, has yet not managed to shield marine antiquities from looting that has been going on for decades. Since they provide extremely important evidence for the human civilization history, societies have the right - according to the archaeologists depicted in the study- to access the underwater cultural heritage sites, most of which remain unknown and inaccessible today. In some cases this is the outcome of a policy intensionally followed by authorities, making international and national registering efforts fragmentary. The designation of marine archeological sites as underwater museums creates a framework that makes marine antiquities accessible. It must be accompanied by the organization of diving access, the application of modern methods for protection of the monuments and their promotion and by measures regarding the safety of the antiquities and the visitors. International experience and archaeological research methodology offer examples and innovative tools for organizing an openand safe access. The anticipated benefits from establishing diving access to underwater archeologies, are not limited to local or sectoral profits but are expanded to the wider international community, with the main goal being the very protection of the archaeological inheritance under sustainability principles and in associationwith the natural environment. Organizing anunderwatersite into a diving destination is also an architectural challenge since re-examining many conventional assumptions will be required in order to cope with on the adversities of this environment.