List of the oldest buildings in Montana

This article lists the oldest extant buildings in Montana, including extant buildings and structures constructed prior to and during the United States rule over Montana. Only buildings built prior to 1870 are suitable for inclusion on this list, or the building must be the oldest of its type.

In order to qualify for the list, a structure must: be a recognizable building (defined as any human-made structure used or intended for supporting or sheltering any use or continuous occupancy); incorporate features of building work from the claimed date to at least in height and/or be a listed building.

This consciously excludes ruins of limited height, roads and statues. Bridges may be included if they otherwise fulfill the above criteria. Dates for many of the oldest structures have been arrived at by radiocarbon dating or dendrochronology and should be considered approximate. If the exact year of initial construction is estimated, it will be shown as a range of dates.

List of oldest buildings

BuildingImage Location First built UseNotes Fort Connah Site between St. Ignatius and Charlo, Montana 1846Trading post Oldest surviving building in Montana; Built of logs. Robber's Roost Alder, Montana 1863 Residence Log house; Listed on National Register of Historic Places Dr. Don L. Byam House Nevada City, Montana 1863 Residence Listed on NRHP Stonewall Hall Virginia City, Montana 1864 Government "hosted the Territorial Legislature between 1865 and 1875""State starts restoration of Montana's oldest standing Capitol building, Stonewall Hall," INDEPENDENT RECORD Aug 31, 2022 Updated Sep 1, 2022 Virginia City Opera House Virginia City, Montana 1864 Stable/Opera House Began as a stone stableSixty-Eight Years of Play The Virginia City Players Katie McGunagle | Saturday Jul. 1st, 2017 https://bozemanmagazine.com/articles/2017/07/01/102605-sixty-eight-years-of-play-the-virginia-city Fenney House Nevada City, Montana 1864 Residence Listed on NRHPGlover CabinAnaconda, Montana1865Residence Pioneer Cabin and Caretaker’s House Helena, Montana 1864-1865 Residence Likely oldest house in Helena, MT St. Mary's Mission (Montana) Stevensville, Montana 1866 Church Oldest church building in MontanaI.G. Baker HouseFort Benton, Montana1867Residence Union League of America Hall White Sulphur Springs, Montana 1867 Hall Men's Club, and later a church Fort Logan and Blockhouse White Sulphur Springs, Montana ca. 1870 Fort Thayer, Bill; Stanton, John. "Fort Logan (1)". Fort Wiki. Retrieved 7 January 2021.

See also National Register of Historic Places listings in Montana History of Montana List of the oldest buildings in the United States

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