Safe as houses: Concrete bunker built at height of Cold War to shelter officials from Soviet nuclear strike that boasts metre thick walls and steel blast doors on sale for £350,000 as country retreat ...

Built to withstand a direct hit by a four-megaton nuclear blast, and protected by three 19-ton steel blast doors, it was designed to provide life support for 400 people for a month following a ...

Some miles away, tucked behind chain-link fences guarded by attack dogs and protected by airlocks, napalm-proof vents and steel blast doors, network servers collate and store encrypted data.

This article appears in the May 5, 2008 issue. It took three years just to excavate that mountain redoubt outside Colorado Springs, that cold war citadel whose two huge blast doors weighed twenty ...