Histria fortress- situated at 62 km far from Constanta, is the oldest greek settlement on romanian territory. Was foundated in year 657 b.c., by greek colonists. Here we can visit Zeus temple.
Tomis fortress- foundated in VI century, b.c., by greek colonists from Milet. In our days still can be seen valuable vestiges: ceramic ancient pots, ” Butchers Tower”, roman wall.
Callatis fortress, from Mangalia- vestiges with an enormous scientific and touristic interest. Here is conserved the oldest latin document from south-west Europe.
Other historical vestiges: Sacidava fortress, Byzantine fortress from Ostrov.