Paraphrased/quoted from Timberline website:
It is legendary and awe-inspiring as a tribute the rugged spirit of the Pacific Northwest. Built in 1937 on the south slope of Mt. Hood, President Franklin D Roosevelt and the First Lady dedicated the lodge as a “monument to the skill and faithful performance of workers”. It was declared a National Historic Landmark in 1977 by the US Department of the Interior as the finest example of Works Progress Administration (WPA) mountain architecture. Made from natural local materials and designed to blend into the landscape, its center holds a multistory 800,000 lb stone chimney