English: The en:Trier Cathedral Treasury is a museum of Christian art and medieval art in Trier located inside the Cathedral of Trier. It contains some of the church's most valuable relics, reliquaries, liturgical vessels, ivories, manuscripts and other artistic objects. The history of the Trier church treasure goes back at least 800 years. In spite of heavy losses during the period of the Coalition Wars, it is one of the richest cathedral treasuries in Germany. With the cathedral it forms part of a UNESCO World Heritage Site.