Roman Catholic Diocese of Helena Roman Catholic Diocese of Helena The Diocese of Helena () is the Catholic diocese for western Montana with its cathedral located in Helena, the state capital. The diocese was erected from the year-old Vicarate of Montana on March 7, 1884, while Montana was still a territory. The diocese is a suffragan of the Archdiocese of Portland, which encompasses Oregon, Idaho, and Montana. Before becoming a diocese, this was the Vicariate of Montana (covering the whole territory and then state of Montana). For its first twenty years, the diocese served all of Montana. In 1904 the new Diocese of Great Falls-Billings
Helena, Montana mining industry was developing. In 1916, the United Daughters of the Confederacy commissioned the construction of the Confederate Memorial Fountain in Hill Park. It was the only Confederate memorial in the Northwestern United States The fountain was removed on August 18, 2017 after the Helena City Commission deemed it a threat to public safety, following a white nationalist rally in Charlottesville, Virginia. The Cathedral of Saint Helena and the Helena Civic Center are two of many significant historic buildings in Helena. Numerous Helenans work for various agencies of the state government. When in Helena, most people visit the local walking