{"id":710,"featured":0,"modified":"2026-04-17 19:40:08","latitude":46.588644700000003240347723476588726043701171875,"longitude":-112.03899250000000620275386609137058258056640625,"title":"Gold Block","subtitle":"Helena Historic District","fullsize":"https://mail.historicmt.org/files/fullsize/a534ecd1068c54190b76ec69613f4281.jpg","address":"50-56 North Last Chance Gulch, Helena, Montana","all_locations":[],"zoom":17,"creator":["Montana National Register Sign Program"],"description":"On July 16, 1928, a devastating fire swept between the Granite and Gold Blocks (note inscription, second story center). The structure was rebuilt by then-owner Charles Benton Power and was the last major downtown commercial building constructed by this wealthy family. The new Gold Block was designed by local architect George Carsley using a system called the “spiral mushroom,” which supposedly offered structural protection against earthquakes. Mission-style parapet tiling and Gothic-influenced windows and entrances highlight this fine example of 1920s commercial architecture.","sponsor":null,"accessinfo":"Private","lede":"","website":"","related_resources":["<a href=\"https://npgallery.nps.gov/NRHP/GetAsset/3fca4448-c79e-4066-a62a-fe552a5d23e2\" target=\"_blank\" rel=\"noreferrer noopener\">Read about the Helena Historic District</a>","<a href=\"https://npgallery.nps.gov/NRHP/GetAsset/d8c79c92-0567-4c6d-8d35-cf378fb0b7ce/\" target=\"_blank\" rel=\"noreferrer noopener\">See photos of the Helena Historic District</a>"],"factoids":[],"files":{"https://mail.historicmt.org/files/fullsize/a534ecd1068c54190b76ec69613f4281.jpg":{"id":3275,"mime-type":"image/jpeg","title":"Gold Block","description":"Gold Block. Front view of the building, facing west on North Last Chance Gulch near the Power Block. Digital photograph. | Montana Historical Society | Jan. 2020 | Michael Connolly","thumbnail":"https://mail.historicmt.org/files/square_thumbnails/a534ecd1068c54190b76ec69613f4281.jpg"},"https://mail.historicmt.org/files/fullsize/76815184fbd69b0f8a49d30fac3f79a4.jpg":{"id":3276,"mime-type":"image/jpeg","title":"Gold Block","description":"Gold Block. Front view of the building, facing northeast on North Last Chance Gulch with the New York Block to the left in the photograph and the Power Block to the right. Digital photograph. | Montana Historical Society | Jan. 2020 | Michael Connolly","thumbnail":"https://mail.historicmt.org/files/square_thumbnails/76815184fbd69b0f8a49d30fac3f79a4.jpg"}}}