Nine archaeological sites passed through a selection process directed by the National Institute of Heritage and the local communities, in order to compile the documentation necessary for the introduction on the UNESCO Tentative List of Romania the following:

Drobeta, Sucidava, Capidava, Carsium, Troesmis, Dinogetia, Noviodunum, Aegysus și Halmyris..

This Danube Limes section contains the natural advantage of the great river, but also that of the Moesic plateau (ripa Thraciae) in equal measure, the plateau being notably higher than the plain on the left side of the Danube.

All the fortifications submitted for proposal in the tentative-list value this double strategic positioning, which gives visibility and natural defense, but also easy access to the river.

The fortresses, in great measure, follow the topography of some valleys / easy crossing points of the river, where commercial exchange with the barbaricum could have taken place.

Of the previously presented, certain notable points regarding the significance of the proposed sites come to light: the dense complex, habitation with overlapping layers that span a millennium, and in certain cases even more; the advantageous geographic positioning, in areas of great visibility. All these fortresses have known an accelerated process of urbanization, growing to be dynamic cities and bishoprics of the Scythia province during the Late Roman Age and the Roman-Byzantine Age (IV-VI centuries).