This former regional government nuclear bunker in Ballymena, Northern Ireland, was built by the British government during the Cold War. It opened in 1990 and was designed to accommodate over 230 personnel. The bunker, owned by the Office of Northern Ireland’s First Minister and Deputy First Minister, is being marketed for £575,000. (Aidan Crawley/Bloomberg)

A path leads to the bunker’s entrance. A large range of the original fixtures and fittings will be included in the sale. It is believed to be one of the most technically advanced bunkers built in Britain with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground, and the upper floor is mounded over with 1 cubic yard of earth. (Clodagh Kilcoyne/Reuters)

An underground bunker in Ballymena, Northern Ireland, was built on an industrial estate in the late 1980s. It contains kitchen facilities, dormitories, meeting and decontamination rooms, and numerous artifacts of that era. It is now for sale at an asking price of nearly $829,000.

Thick blast doors comprise the main entrance. Construction started in 1987. The heavily fortified shelter contains dormitories, kitchen facilities and decontamination chambers. (Paul Faith/AFP/Getty Images)

The water filter room. (Clodagh Kilcoyne/Reuters)

A kitchen area inside the bunker. (Paul Faith/AFP/Getty Images)

Long shelf life tins of food are displayed in the kitchen. (Clodagh Kilcoyne/Reuters)

The men’s lavatory. The Ballymena bunker is one of approximately 1,600 nuclear monitoring posts built in Britain since 1955. (Charles McQuillan/Getty Images)

A lounge room inside the bunker. (Clodagh Kilcoyne/Reuters)

A room with an overhead projector. (Aidan Crawley/Bloomberg)

Manuals for Microsoft’s Windows 3 software sit inside the bunker as one of many items to be included in the sale. (Aidan Crawley/Bloomberg)

Sleeping quarters. (Paul Faith/AFP/Getty Images)

A staircase stands inside the bunker. The property that was opened in 1990 and designed to accommodate over 200 people is being marketed by Lambert Smith Hampton Ltd. (Aidan Crawley/Bloomberg)

A generator sits inside the bunker. (Aidan Crawley/Bloomberg)

A man climbs up the escape ladder of a decontamination shower. (Paul Faith/AFP/Getty Images)

A BBC broadcast room. (Clodagh Kilcoyne/Reuters)

Recording tapes and film cans. (Clodagh Kilcoyne/Reuters)

A conference room. (Aidan Crawley/Bloomberg)

A plastic plant stands next to several doorways inside the bunker. (Aidan Crawley/Bloomberg)