Duke's Vault

Vast treasure-filled vault room containing piled art, razors, valuables, and a hidden cage prison for children amid the opulence. Located within a major estate.

Duke's Vault first appears in Iron Gold as a lavish, treasure-laden chamber within a noble estate, its opulence masking a grim secret: a hidden cage prison holding captive children. The vault serves as both a symbol of aristocratic excess and a site of moral reckoning, where the contrast between glittering spoils and human suffering crystallizes the saga's themes of systemic injustice. Across the series, the vault evolves from a static repository of wealth into a pivotal location that exposes the brutal underbelly of Gold society, forcing characters to confront the human cost of their civilization's decadence.