History: Interior of the Lake Union Steam Plant boiler room, Seattle, Washington, 1920 [2924×2227]

https://upload.wikimedia.org/wikipedia/commons/8/8b/Steam_plant_boiler_room%2C_1920_%2825119396080%29.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/88z5jj/interior_of_the_lake_union_steam_plant_boiler/?utm_source=ifttt