The history of mankind is quite impressive. We have come a long way but it’s undeniable that the ancient civilizations that existed before us are all brilliant and amazing.

They’ve built many incredible things and some of their inventions were far too advanced for their time. Archeologists and historians can easily explain most of the ancient inventions but there’s still a plethora of mysteries and questions out there.

Most of the time, people attribute unexplainable things to extraterrestrial beings, but maybe it’s about time we give our ancestors more credit.

From the Damascus Steel to the Ancient Flying Machine, here are 15 oldest technologies that scientists can’t explain.