The most important neighbouring abbeys were Bausendorf, Saint-Avold, Glandern, Villers-Bettnach, Fraulautern, Mettlach, Tholey, and the stift of St. Arnual.

With the emergence of his cult of veneration, its importance increased, as can be seen from several rebuildings and extensions, as well as from numerous documents that mention a tax payment to the monastery.

In the 11th century, a monumental pillar basilica measuring 72 meters in length was built, which, in addition to the two apses, had five towers and a west building.

The monastery gave important impulses for the development in Upper Lorraine, which is documented in numerous village and estate foundings by the monks.

It probably came to the continent with the British missionaries in the 8th century and came into the possession of William Laud ("Laudian Acts", today Oxford, Bodleian Library, Msc.

The relics of Saint Pirmin were brought to Speyer in 1558 by the last abbot of Hornbach, Count Anton von Salm.

From there they were brought to Innsbruck in 1575 by the former president of the Reichskammergericht (Imperial Chamber Court) and now governor of Tyrol, Count Schweikhard von Helfenstein.

The Evangelical Church of the Palatinate, which owns the former abbey district, had a chapel built over the historic tomb in 1957, and it is now once again a place of pilgrimage.