Each of the four Temples in Utah is provided with a small detached building known as the Annex. This is used for office purposes and other incidental service, and contains an assembly room in which are held devotional exercises preliminary to those of the Temple proper.
The Annex of the Salt Lake City Temple is an attractive building of cream-colored oolite, standing about one hundred feet north from the main structure. The Annex is connected with the Temple by a passage, partly below ground-level.
C. R. Savage Co.
<i>The House of the Lord: A Study of Holy Sanctuaries, Ancient and Modern</i>