The powerful Celtic social class posed a threat to the Roman Empire before being subsumed by Christianity, but their origins remain shrouded in the past. Modern Druid leader Arthur Pendragon watches ...

In the German state of Hesse, right where the Nidder and Seeme rivers wind through fertile fields, stands a hill that holds millennia-old secrets: the Glauberg, an oppidum (Celtic fortification) from ...

They held no temples, left no books—but ruled minds and kings alike. The Druids were the spiritual force behind the Celts, and their secrets still echo in myth.