Trier Cathedral Treasury in the context of "Reliquary"

A church treasury or church treasure is the collection of historical art treasures belonging to a church, usually a cathedral or monastery (monastery treasure). Such "treasure" is usually held and displayed in the church's treasury or in a diocesan museum. Historically the highlight of church treasures was often a collection of reliquaries.

As a result of gifts and the desire to acquire sacred artifacts, many churches over the centuries gathered valuable and historic collections of altar plates, illuminated manuscripts of liturgical or religious books, as well as vestments, and other works of art or items of historical interest. Despite iconoclasm, secularism, looting, fire, the enforced sale of treasure in times of financial difficulty, theft and other losses, much of this treasure has survived or has even been repurchased. Many large churches have been displaying their riches to visitors in some form for centuries.

The High Cathedral of Saint Peter in Trier (German: Hohe Domkirche St. Peter zu Trier), or Trier Cathedral (German: Trierer Dom), is a Roman Catholic cathedral in Trier, Rhineland-Palatinate, Germany. It is the oldest cathedral in Germany and the largest religious structure in Trier, notable for its long life span and grand design. The central part of the nave was built of Roman brick in the early fourth century, resulting in a cathedral that was added onto gradually in different eras. The imposing Romanesque westwork, with four towers and an additional apse, has been copied repeatedly. The Trier Cathedral Treasury contains an important collection of Christian art. In 1986 the church was listed as a UNESCO World Heritage Site, as part of the Roman Monuments, Cathedral of St. Peter and Church of Our Lady in Trier.