Sacred groves were still used in Gallo-Roman times, and the Druids may have had a preference for them, a preference which may underlie the words of the scholiast on Lucan, that "the Druids worship the gods without temples in woods." But probably more elaborate temples, great tribal sanctuaries, existed side by side with these local groves, especially in Cisalpine Gaul, where the Boii had a temple in which were stored the spoils of war, while the Insubri had a similar temple.[958] These were certainly buildings. The "consecrated place" in Transalpine Gaul, which Cæsar mentions, and where at fixed periods judgments were given, might be either a grove or a temple. Cæsar uses the same phrase for sacred places where the spoils of war were heaped; these may have been groves, but Diodorus speaks of treasure collected in "temples and sacred places" ([Greek: en tois hierois chai temenesin]), and Plutarch speaks of the "temple" where the Arverni hung Cæsar's sword.[959] The "temple" of the Namnite women, unroofed and re-roofed in a day, must have been a building. There is no evidence that the insular Celts had temples. In Gallo-Roman times, elaborate temples, perhaps occupying sites of earlier groves or temples, sprang up over the Romano-Celtic area. They were built on Roman models, many of them were of great size, and they were dedicated to Roman or Gallo-Roman divinities.[960] Smaller shrines were built by grateful worshippers at sacred springs to their presiding divinity, as many inscriptions show. In the temples stood images of the gods, and here were stored sacred vessels, sometimes made of the skulls of enemies, spoils of war dedicated to the gods, money collected for sacred purposes, and war standards, especially those which bore divine symbols.