This is not medieval related — it’s actually pre-medieval — but I enjoy archaeology and found this article interesting (except for the blurb at the beginning about the Bible being fictitious).
The ten artifacts mentioned include:
- The Grooved Spheres
- The Dropa Stones
- The Ica Stones
- The Antikythera Mechanism
- The Baghdad Battery
- The Coso Artifact
- Ancient Model Aircraft
- Giant Stone Balls of Costa Rica
- Impossible Fossils
- Out-of-Place Metal Objects