Led by prominent Spanish architect Alfredo Muñoz, architecture firm ABIBOO Studio has worked on a long list of innovative projects from luxury celebrity homes to intergalactic cities to disaster relief shelters – and now survival bunkers, too.

The firm's DBX doomsday bunker concept for a mystery client in South Carolina was revealed in 2021. Nestled beneath the earth on 12 acres (0.8ha) of land, the entrance to the subterranean complex is guarded by a military-grade door, which leads down to a garage and a repair room. Access to the bunker's main living areas is via a decontamination room, featuring an air shower and a wet shower that sterilises returning residents.

Billionaire bunkers to survive the end of the world