During the Thirty Years' War it became practically a ruin, however, though its later rebuilding was on the original lines.
In 1793 the revolution which sprang up in France forced its way to the Rhine, and, when Mayence was besieged, the roof of the cathedral caught fire and the church itself was pillaged and profaned.
For a long time the old cathedral remained abandoned, as after an invasion of barbarians, which is about what the revolutionists proved themselves to be. In 1803 Napoleon saw fit to order it to be restored, and in the following year it was returned to its adherents.
The ancient metropolis, however, lost the distinction which had been given to it in Roman times, and the glory first brought upon[{166}] it by St. Boniface lapsed when the arch-episcopal see was suppressed. Mayence is now merely a bishopric, a suffragan of Cologne.
In its general plan the cathedral at Mayence follows the outlines of a Latin cross, though its length is scarcely more than double its width.
It is most singular in outline and has two choirs, one at either end, as is a frequent German custom, and the sky-line is curiously broken by the six towers which pierce the air, no two at the same elevation.
There are three portals which give entrance from various directions. There is yet a fourth entrance from the market-place, which takes one through a sort of cellar which is not in the least churchly and is decidedly unpleasant.
The principal nave is supported by nine squared pillars, which are hardly beautiful in themselves, but which are doubtless necessary because of the great weight they have to bear.
In the Gothic choir is a heavy baldaquin in marble, bearing figures of the twelve apostles. The high altar is directly beneath the cupola, or lantern, of the principal tower. It is quite isolated, and has neither flanking columns nor a baldaquin. On feast-days it is[{167}] brilliantly set forth with candelabra in a fashion which would be theatrical, if it were not churchly.