Topic summary
Chapels

Extracted from the Wikipedia article Chapel.
Types of chapel
Chapels that are built as part of a larger church are holy areas set aside for some specific use or purpose: for instance, many cathedrals and large churches have a "Lady chapel" in the apse, dedicated to the Virgin Mary; parish churches may have such a Lady chapel in a side aisle or a "chapel of Reservation" or "Blessed Sacrament chapel" where the consecrated bread of the Eucharist is kept in reserve between services, for the purpose of taking Holy Communion to the sick and housebound and, in some Christian traditions, for devotional purposes.