Celts once lived across Scotland, Ireland, France and Germany, and so-called 'Celtiberians' once inhabited the Iberian Peninsula. They were the first to establish a settlement at Segobriga in the central Spanish region of Cuenca, supposedly naming it for two Celtiberian words – 'sego' ('victory') and 'briga' ('fortress').
It was later taken over by the Romans and became a major outpost, with an amphitheatre seating 5,500, public baths, city walls and even an acropolis. These sites remained hidden until the ancient city was discovered in 1888.