Mormon pioneers These southern explorations eventually led to Mormon settlements in St. George, Utah, Las Vegas and San Bernardino, California, as well as communities in southern Arizona. By 1885, Mormon communities were being established in northern Mexico. The Mormon pioneers are celebrated annually on July 24 in the State of Utah, known as Pioneer Day. Salt Lake City also has the Mormon Pioneer Memorial Monument, where Brigham Young, Eliza R. Snow, and other Mormon pioneers are buried and where a memorial exists dedicated to all who crossed the plains to the Salt Lake Valley. Additionally, the Pioneer (characterized as "Pioneer Pete") is
Salt Lake City Saint movement, planned the layout in the "Plat of the City of Zion" (intended as a template for Mormon towns wherever they might be built). In his plan the city was to be developed into 135 lots. However, the blocks in Salt Lake City became irregular during the late 19th century when the LDS Church lost authority over growth and before the adoption of zoning ordinances in the 1920s. The original blocks allowed for large garden plots, and many were supplied with irrigation water from ditches that ran approximately where modern curbs and gutters would be laid. The original water