FORTIFIED BULGARIA, PART 1
Why there are no old forts and fortresses in Bulgaria on the scale of Romania, Greece, Italy or the Western Balkans is a controversial issue. The sort of answers you will be getting will depend on who does the talking. Some will assert the "Turks" destroyed everything when they ruled over these territories in the 14-19th centuries. Others will, more level-headedly, point out that when the Ottomans were in control the Bulgarians lands were no longer a border zone and consequently forts and fortresses were no longer needed for defence purposes.