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
Holy Trinity Cathedral (Salt Lake City, Utah) 439 West 400 South and obtained a loan for construction. The first priest arrived from Greece in April. The first church building was dedicated on October 29, 1905, and named Holy Trinity Greek Orthodox Church. The church was a central element of Greek Town in the non-Mormon immigrant district of Salt Lake City and served Serbian and Russian immigrants in addition to Greeks. The community quickly outgrew the original church building and initiated plans for a new building around 1920. The original building was sold and the site of the current Holy Trinity Cathedral, at Third South and Second West,