s Charlemagne, the mighty ruler of the Franks, rode one day from his stronghold at Aix-la-Chapelle into the surrounding forest, his horse is said to have suddenly trodden upon a spring. On touching the water, the animal drew its foot back neighing loudly as if in great pain.

The rider's curiosity was aroused. He alighted, and dipping his hand into the spring, found to his surprise that the water was very hot. Thus Charlemagne, as the legend records, discovered the hot spring which was to become the salvation of many thousands of ill and infirm people.

The pious emperor recognised in this healthgiving spring the kind gift of Providence, and he resolved to erect near the spot a house of God, the round shape of which should remind posterity of the horse's hoof.

The building was soon begun, and Charlemagne saw with great satisfaction the walls of the new minster rising high into the air. He was not however destined to see its completion. When he died, he had to leave the great Empire of the West to a feeble son, Lewis the Pious. The latter was compelled to draw his sword against his own children in order to assure for himself the crown he had inherited.

Many a great undertaking that Charlemagne had begun, remained unfinished.