The Geomagnetician's House is a nomadic dwelling calibrated to the constantly shifting magnetic north pole, staging domestic and scientific rituals as part of its occupation. Conceived for scientists yet narrated centuries later as a ruin rediscovered by future archaeologists, it operates in a future-retrospective time frame. The project examines planetary science, entropy, and the persistence of data over geological duration, positioning architecture as both instrument and relic. The house becomes evidence and witness, situating everyday inhabitation within a cosmic field of observation.