Only skimpy odds and ends remain of Tonnerre's one-time flanking gates, walls and towers. Its old chateau--which the counts invariably referred to, and with reason doubtless, as a palace--has been rebuilt and incorporated into the structure of the present hospital, itself a foundation by Marguerite de Bourgogne and dating back to 1293. No doubt many of the wards which to-day shelter the ill and crippled were once the scene of princely revels. In the nineteenth century the structure was further remodelled and put in order, but it remains still, from an architectural point of view at least, an admirable example of Renaissance building, though none of its attributes to be seen at a first glance are such as are usually associated with a great chateau of the noblesse of other days. At all events its functions of to-day are worthy, and it is far better to admire a mediæval chateau which has become a hospital than one which has been transformed into a military barracks or a prison for thieves and cutthroats, an indignity which has been thrust on many a grand old edifice in France deserving of a better fate. To-day such a hard sentence is seldom passed. The "Commission des Monuments Historiques" sees to it that no such desecrations are further committed. Within the hospice is the remarkably sculptured tomb of Marguerite de Bourgogne; as remarkably done in fact as the better known ducal tombs at Dijon, and those of the Église de Brou at Bourg-en-Bresse. The workmanship of these elaborate sculptures is typical of that known as the École de Dijon. Tonnerre's most remarkable sight is neither its chateau, nor its hospice, at least not according to the inhabitant. There is nothing to the native more curious or interesting to see than the celebrated Fosse Dionne (the Fons Dionysius of the ancients), a fountain which supplies the city with an abundance of fresh water coming from no one knows where, but spouting from the earth like a geyser, and with a sufficient force to turn a couple of water-mills. An ordinary enough bubbling spring is interesting to most of us, so that one enjoying an ancient and mysterious reputation is put down as a local curiosity well worth coming miles to see. Half a dozen kilometres out from Tonnerre, on the road to Châtillon-sur-Seine, is the Chateau de Tanlay, not known at all to the travellers by express trains who are whisked by to Switzerland with never as much as a slow-up or a whistle as they pass the little station but a short distance from the park gates. The Chateau de Tanlay is a superb relic of a sixteenth century work. This was a period when architectural art had become debased not a little, but here there is scarcely a trace of its having fallen off from the best traditions of a couple of centuries before. It is this fact, and some others, that makes Tanlay a sight not to be neglected by the lover of old chateaux.