[cmsms_row][cmsms_column data_width=”1/1″][cmsms_text] The Ancient city of Perperikon, one of the most famous ancient monuments in Bulgaria that dates back to 5000 BC, is located 20 kilometers northeast of the city of Kardzhali. Sitting high on a peak of the Rhodope mountain it had become a famous merchants’ crossroad for many centuries. Perperikon had many famous…