Eldkvarn was a grand gristmill in central Stockholm that burned in 1878 — an event which was known as "the fire of the century".
It was a moment that gripped the city in horror, as citizens watched the fire rage and fill the night sky.
The most widely accepted one is that a small gas lamp fell, igniting the many bits of dust and grain on the floor, and it spread from there.
Unlike the Great Fire of London, though, it was contained to the area in and around the factory, meaning it did not spread to other parts of Stockholm.
Despite the fire being so large, they managed to save part of the mill and, perhaps most amazingly, it stayed open until 1906.