The Celts were a collection of tribal societies sharing similar languages, art, and culture across Iron Age Europe. Their arrival in Britain and Ireland occurred in waves, shaping the islands' early history.
Metalwork: Masterful gold, bronze, and iron artifacts (torcs, weapons, chariot fittings).
Architecture: Hillforts (Maiden Castle), stone circles (Callanish), brochs (Scotland).
Art: La Tène style—swirling geometric patterns, zoomorphic designs.
Polytheistic, nature-centered, with druids as priestly class. Sacred sites: springs, groves, rivers. Belief in afterlife evidenced by grave goods.
Rome invaded Britain in 43 AD, conquering most of the island but never fully subduing Caledonia (Scotland) or Hibernia (Ireland). Celtic culture persisted in the fringes and influenced medieval Insular art (Book of Kells). Modern Celtic identity revives these roots in Wales, Scotland, Ireland, Cornwall, Brittany, Isle of Man.