A tabernacle or a sacrament house is a fixed, locked box in which the Eucharist is stored as part of the "reserved sacrament" rite. A container for the same purpose, which is set directly into a wall, is called an aumbry.
The tabernacle at St Raphael's Cathedral in Dubuque, Iowa, placed on the old high altar of the cathedral (cf. General Instruction of the Roman Missal, 315, a)
The ornate tabernacle in St Martin's church, Kortrijk, Belgium
Tabernacle at Cathédrale Saint Louis de Versailles
Tabernacle at St. Catherine of Siena Church, Trumbull CT
Eucharist in the Catholic Church
Eucharist is the name that Catholic Christians give to the sacrament by which, according to their belief, the body and blood of Christ are present in the bread and wine consecrated during the Catholic eucharistic liturgy, generally known as the Mass. The definition of the Eucharist in the 1983 Code of Canon Law as the sacrament where Christ himself "is contained, offered, and received" points to the three aspects of the Eucharist according to Catholic theology: the real presence of Christ in the Eucharist, Holy Communion, and the holy sacrifice of the Mass.
Eucharist displayed for adoration
The reverence Moses showed before the burning bush on Mt. Sinai is equated with the adoration of the Shepherds and the priest celebrating the sacrifice of the Mass.
The Speculum Humanae Salvationis contains illustrations of related scenes from the Old and New Testaments.
Jesus Christ with the Holy Eucharist