It was large enough to house over 200 people at once, with two floors and five rooms, and a large living room for each floor, along with the basement.
A large circular cut was made in the basement floor, which Damian fitted with a meters-thick ring of condensed steel. Only one spell was engraved on it—an invisible box spell with no gap between the two walls at all. The shape was circular, like the steel ring. It was meant to work as a glass-like window to see beneath the ocean.
Along with that, Damian installed a simple steel pillar of the same size as the ring, which was around 60 cm in diameter. The pillar had the wormhole spell, the distance of which was set by Damian to open directly beside the abyssal pitch-black vertical opening of the dungeon underwater. The entrance of the wormhole would take the size of the translucent window he had made with the steel ring on the basement floor.
