St. Paul's Cathedral is the Roman Catholic Cathedral in St. Paul, Minnesota. It is the cathedral of St. Paul and Minneapolis Archdiocese; the Union Cathedral is St. Mary's Cathedral in Minneapolis. It is one of the most unique cathedrals in the United States, located on the Cathedral Hill overlooking the center of St. Paul and features a unique copper-clad dome. It is dedicated to the Apostle Paul, who is also the same name of St. Paul. The current building, which opened in 1915, is the fourth cathedral in the Archdiocese with the name.