Reconstructed round houses in the Celtic hill settlement dating to the Iron Age at Citania de Briteiros, Minho, Portugal, Europe

Remains of a round house in the Celtic hill settlement dating to the Iron Age at Citania de Briteiros, Minho, Portugal, Europe

Remnants of Celtic settlement on limestone bench, Hill Castles, Wharfedale, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe