Incarceron by Catherine Fisher
Incarceron by Catherine Fisher

Incarceron is a prison so vast that it contains not only cells and corridors, but metal forests, dilapidated cities, and wilderness. It has been sealed for centuries, and only one man has ever escaped. Finn has always been a prisoner here. Although he has no memory of his childhood, he is sure he came from Outside. His link to the Outside, his chance to break free, is Claudia, the warden’s daughter, herself determined to escape an arranged marriage. They are up against impossible odds, but one thing looms above all: Incarceron itself is alive . . .

Synopsis

Imagine a living prison so vast that it contains corridors and forests, cities and seas. Imagine a prisoner with no memory, who is sure he came from Outside, even though the prison has been sealed for centuries and only one man, half real, half legend, has ever escaped.
Imagine a girl in a manor house in a society where time has been forbidden, where everyone is held in a seventeenth century world run by computers, doomed to an arranged marriage that appals her, tangled in an assassination plot she both dreads and desires.
One inside, one outside
But both imprisoned.
Imagine a war that has hollowed the moon, seven skullrings that contain souls, a flying ship and a wall at the world’s end.
Imagine the unimaginable.
Imagine Incarceron.