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 Council Hall the first of six mayors that would use the building. The People's Party would control Mayor's office until 1890 when the Liberal Party (territorial non-Mormon party) gained control of city government, partially because of anti-polygamy legislation which barred many Mormon polygamists from holding office. Six rooms on the first floor housed the mayor's office and other city departments. From 1866 until the completion of the Salt Lake City and County Building in 1894, the City Hall was the seat of Salt Lake City Government and meeting place for the Utah Territorial legislature. The Rose Room on the second floor served