Medieval cannonballs used by the armies of Vlad the Impaler have been discovered in the town of Svishtov.
Archaeologists in Bulgaria have uncovered a ring once used as a way to secretly poison people's drinks.
Footage of a strange glowing sphere-shaped object moving across the sky has appeared on YouTube.
Two medieval skeletons with iron stakes through their chests have been discovered in Bulgaria.
Bone fragments believed to belong to St John the Baptist have been discovered in Bulgaria.