Cathedral of Saint Helena Cathedral of Saint Helena The Cathedral of Saint Helena is the cathedral of the Roman Catholic Diocese of Helena, Montana. Modeled by architect A.O. Von Herbulis after the Votivkirche in Vienna, Austria, the construction began on the Cathedral in 1908, and held its first mass in November 1914. The Cathedral sustained significant damage during the 1935 Helena earthquake, which required extensive renovations. The Cathedral was added to the National Register of Historic Places in 1980. The site for the cathedral was purchased in 1905. A.O. Von Herbulis of Washington, D.C., was commissioned as the architect. Von Herbulis was trained abroad
Helena River catchment Nyaania Creek and on the southern side Piesse Brook are significant in their moving through built up areas which makes them susceptible to urban environment issues. Upper Helena catchment (i.e. above Mundaring Weir) has on the north side of Lake C.Y. O'Connor (formerly the Helena River Reservoir) a range of named creeks that occur in State Forest no 71 and 13: In the higher ground the Helena River passes mainly through State Forest or reserve. This has been beneficial for some of the catchment area, as it has been an important buffer between the urban settlements in the Mundaring