Of the original inhabitants of what is now Portugal little is known, but that they were more Celtic than Iberian seems probable from a few Celtic words which have survived, such as _Mor_ meaning _great_ as applied to the _Capella Mor_ of a church or to the title of a court official. The name too of the Douro has probably nothing to do with gold but is connected with a Celtic word for water. The Tua may mean the 'gushing' river, and the Ave recalls the many Avons. _Ebora_, now Evora, is very like the Roman name of York, Eboracum. _Briga_, too, the common termination of town names in Roman times as in Conimbriga--Condeixa a Velha--or Cetobriga, near Setubal--in Celtic means _height_ or _fortification_. All over the country great rude stone monuments are to be found, like those erected by primitive peoples in almost every part of Europe, and the most interesting, the curious buildings found at various places near Guimarães, seem to belong to a purely Celtic civilisation. The best-known of these places, now called Citania--from a name of a native town mentioned by ancient writers--occupies the summit of a hill about nine hundred feet above the road and nearly half-way between Guimarães and Braga. The top of this hill is covered with a number of structures, some round from fifteen to twenty feet across, and some square, carefully built of well-cut blocks of granite. The only opening is a door which is often surrounded by an architrave adorned with rough carving; the roofs seem to have been of wood and tiles. Some, not noticing the three encircling walls and the well-cut water-channels, and thinking that the round buildings far exceeded the rectangular in number, have thought that they might have been intended for granaries where corn might be stored against a time of war. But it seems far more likely that Citania was a town placed on this high hill for safety. Though the remains show no other trace of Roman civilisation, one or two of the houses are inscribed with their owner's names in Roman character, and from coins found there they seem to have been inhabited long after the surrounding valleys had been subdued by the Roman arms, perhaps even after the great baths had been built not far off at the hot springs of Taipas. Uninfluenced by Rome, Citania was also untouched by Christianity, though it may have been inhabited after St. James--if indeed he ever preached in Bracara Augusta, now Braga--and his disciple São Pedro de Rates had begun their mission.