The Clockwork Sun
"Sunlight seeps like syrup through cracks in the stained-glass ceiling. The floor shudders in time with the churning machinery far beneath your feet. The air has a tang of chemicals, bonfires and rain."
"Pistons pump, cogs turn, and suit-swaddled figures tend to the enginery, bellowing over the shrieking metal."

The Clockwork Sun is the Dawn Machine 2.0: an actual, functional artificial Judgement! Its power allows Empress Victoria to preside over time itself. A museum of sorts was built inside this Sun, but unfortunately it had to be abandoned due to the dangers of sunlight. As it turns out, while all sunlight won't kill you in the High Wilderness, The Clockwork Sun's sunlight will turn you into glass, slowly and excruciatingly, and drive you insane.
It's implied that the Clockwork Sun is dying, or wounded, and it's not very happy about it.
It also causes time to unravel in 'Wefts of Unraveling Time', which can be found in Albion.