Murighiol Tulcea, the administrative residence of this county, is also called the Gate of the Danube Delta. Here the Danube divides into three branches forming a magic land, the Delta. Tulcea is a port of a long history built on the ruins of the Roman fortress Aegisus. More Mihai Bravu Mihai Bravu commune is located in the central part of Tulcea County being bounded by the following communal territories: to the north and northwest the administrative territory of Mihail Kogălniceanu commune, to the east the territory of More Sarichioi Sarichioi commune is located in the central area of Tulcea County, being bounded by the following communal territories: to the northeast the administrative territory of Valea Nucărilor commune, to the east Razelm Lake, to the south the administrative territory of Ceamurlia commune, to the west the More Tulcea County occupies the northern half of the historical province Dobrogea, located in the south-eastern extremity of Romania. Surrounded on three sides by water, it is bordered to the west by the counties Brăila and Galaţi, to the north with Ukraine through the natural border Danube, to the east by the Black Sea, having terrestrial border only to the south with Constanţa County. The relief of the county also includes the Horst of Dobrogea, remnant of the hercinic creases, which presents itself as a typical plateau, which determines the existence of three biogeographical zones: the steppe, the steppe forest and the forest. The archaeological discoveries on the territory of Tulcea County have put into light traces of habitation with an age of approx. 110,000 years. On the archaeological map of the county, the vestiges of the cultures Hamangia, Gumelniţa and Thracian-Dacian, of the Getic-Dacian fortresses and of the great Roman city buildings offer important documentary evidence of the material and spiritual life on these lands.