This Cathedral of the Sea is a fitting example of a peculiar type of architecture which exists also in Provence,--a succession of fortress-churches that extend along the Mediterranean from Spain to Italy like the peaks of a mountain chain. Nothing can better illustrate the continuous warrings and raidings in the South of France than these strange churches, and their many fortified counterparts inland, in both Languedoc and Gascony. Castles and walled towns were not sufficient to protect the Southerner from invasions and incursions; his churches and Cathedrals, even to the XIV century, were strongholds, more suitable for men-at-arms than for priests, and seemingly dedicated to some war-god rather than to the gentle Virgin Mother and the Martyr-Saints under whose protection they nominally dwelt. Although most interesting, the military church of the interior is seldom the Bishop's church. The maritime church on the contrary is nearly always a Cathedral, with strangely curious legends and episodes. The French coast of the Mediterranean was the scene of continuous pillage. Huns, Normans, Moors, Saracens, unknown pirates and free-booters of all nationalities found it very lucrative and convenient to descend on a sea-board town, and escape as they had come, easily, their boats loaded with booty. "As late as the XII century," writes Barr Ferree, "buccaneers gained a livelihood by preying on the peaceful and unoffending inhabitants of the villages and cities. The Cathedrals, as the most important buildings and the most conspicuous, were strongly fortified, both to protect their contents and to serve as strongholds for the citizens in case of need. In these churches, therefore, architecture assumed its most utilitarian form and buildings are real fortifications, with battlemented walls, strong and heavy towers, and small windows, and are provided with the other devices of Romanesque architecture of a purely military type." [Illustration: "FORTIFIED GOTHIC BUILT IN BRICK."--ALBI.] "Time has dealt hardly with them. The kingly power, being entrenched in Paris, developed from the Isle de France. The wealth that once enriched the fertile lands of the South moved northwards, and the great commercial cities of the North became the most important centres of activity. Then the southern towns began to decline," and the buildings which remain to represent most perfectly the "Church-Fortress" are not those of Provence, which are "patched" and "restored," but those of Languedoc, Agde, and Maguelonne, and Elne of the near-by country of Rousillon. [Illustration: "A CHURCH FORTRESS."--MAGUELONNE.] [Sidenote: Gascony.]