Because The Church of Jesus Christ of Latter-Day Saints encourages its members to trace their genealogical histories, many visitors to Salt Lake City spend considerable time in this interactive computer center and its more detail-oriented counterpart, Family History Library. Searchers plug in names, birthplaces and marriage dates, and the FamilySearch computers spit out mind-boggling arrays of genealogical records. Admission to the center is free, as is use of the 180 user-friendly FamilySearch computers. Serious searchers should call ahead for recommendations regarding pre-visit research.