We all know about a panic room, but a team of architects literally thought inside the box to come up with the ultimate safety zone for anyone harbouring apocalyptic thoughts.

The Safe House, built on the outskirts of Warsaw, Poland, is about as secure as any above-ground home will ever be – at the touch of a selection of buttons the house closes into an impregnable concrete cube.

Doors and windows are sealed from the outside world using powerful concrete panels, and the only way to get in our out once the place has been shut up is via a second-floor entrance protected by a rising drawbridge.

Rather redundantly, the property is also surrounded by a wall.

Polish architectural firm KWK Promes, the architects behind the design, wrote on its website: 'The most essential item for our clients was acquiring the feeling of maximum security.'