Idaverrano's vault. The interior would need to reflect Idaverrano’s status as old regional seat of House Indoril before the inner Sea existed. The entire interior would be flooded and items would float in the water. Most wooden furniture and clutter that hasn't rotted away already should be floating or have slowly moved against the lower walls. Use of kelp, barnacles, etc. is encouraged. As a last step, the claimant should tilt the interior to match the exterior's rotation angles.
