The Church of Jesus Christ of Latter-day Saints (the LDS Church or, informally, the Mormon Church) is a Christian restorationist church that is considered by its followers to be the restoration of the original church founded by Jesus Christ. The church is headquartered in Salt Lake City, Utah, and has established congregations (called wards or branches) and built temples worldwide. According to the church, it has over 85,000 missionaries and a membership of over 15 million. It is ranked by the National Council of Churches as the fourth-largest Christian denomination in the United States. It is the largest denomination in the Latter Day Saint movement founded by Joseph Smith during the period of religious revival known as the Second Great Awakening.