No one of these suppositions is tenable. In the troublous times of Ireland, and, unhappily, it has had scarcely any other kind, the monasteries and ecclesiastical buildings of every description were generally spared, even by the most ruthless marauders; and, had this not been the case, those possessing sufficient valuable property to attract the cupidity of the lawless were far more likely to provide an inconspicuous hiding place for their wealth than to advertise its possession by erecting a tower which, from every direction, was invariably the most conspicuous feature of the landscape. That the towers were not intended for belfries is evident from the fact that, in nearly every case, the churches close by are provided with bell-towers forming a part of the sacred edifice, which would not be the case if the round towers had been designed for the purpose of supporting bells. That they were not built for hermit-cells is apparent from the fact that hermit-caves and cells are abundant in Ireland, and, almost without exception, in secluded spots. No doubt, from time to time, some of the round towers were adapted to each of these uses, but, in every case, convenience was the motive, the monks and church-builders altering the existing structure to meet a pressing necessity. In fact, there is excellent reason for believing that the round towers were not built by the monks at all, the monastic writers being very fond of recording, with great particularity, what they built and how they built it, and in no passage do they mention the construction of a round tower. Whenever allusion is made to these structures, their existence is taken for granted, and several church historians who mention the erection of churches at the foot of a round tower demonstrate that this peculiar edifice antedates the introduction of Christianity into Ireland. The round towers are indisputably of pagan origin, and of antiquity so great as to precede written history. There is no doubt that the early Irish were sun and fire worshippers, and many excellent reasons may be given for the belief that the round towers were built by the Druids for purposes of religion.