Being the oldest Catholic diocese of Germany, Trier preserves sacred treasures of 1500 years of Christian history. Among these treasures are pieces of world-class, such as the Carolingian nail reliquary (front cover) or the Egbert Shrine. Many of these objects—which are of high material and artistic value—are integral parts of religious practices up to this day. This richly illustrated publication aims to introduce an extensive selection of relics, reliquaries, and liturgical instruments from the late antiquity to the modern period.