A replica pub inside a radiation-proof bunker in Wiltshire is among the most secure places on Earth.
The pub is of the most secure "lock-ins" in the world
Science magazine Focus says the "1960s Bar" within the Burlington bunker under Corsham is the world's most secure pub.
The bar is part of a replica of Whitehall which includes a copy of the pub still frequented by government officials, the Red Lion.
Also listed by the magazine are Fort Knox, Saddam Hussein's Baghdad bunker and a car park in Derby.
Focus took different crtieria in order to find the "safest" military bases, prisons, banks, homes and forms of transport.
The pub at Burlington - now called the Rose and Crown - was judged to be the most protected pub due to its location - 30m underground.
Built in the late 1950s, Burlington is a 186,000 square-metre base which was decommissioned in the late 1980s.
But it is still maintained by a small number of staff so could be used as a seat of government in the event of a nuclear attack.
Focus says the Rose and Crown's uniquely secluded site makes it ideal for "the ultimate lock-in".