The main entrance and blast door at the nuclear bunker site on the Woodside Road industrial estate on February 4, 2016 in Ballymena, Northern Ireland. The underground shelter has been put up for sale by the offices of the Northern Ireland First and Deputy First Minister. The bunker which was completed in 1990 was built to hold up to 235 people in the event of a nuclear bomb and is complete with kitchen facilities, dormitories and decontamination chambers. The site, one of approximately 1,600 nuclear monitoring posts built in the UK since 1955, is on the housing market with an asking price of £575,000. (Photo by Charles McQuillan/Getty Images)





Some of the sleeping quarters inside the nuclear bunker that was built during the cold war in Ballymena, Northern Ireland, Thursday, February 4, 2016. Northern Ireland is selling its Cold War-era nuclear bunker, an underground installation with room for 235 beds that sellers imagine could be transformed into a tourist attraction or blast-proof storage facility. Journalists took a tour Thursday of Northern Ireland's strangest real estate offering. For 575,000 pounds ($850,000), the successful buyer could acquire a 46,363-square-foot (4,300-square-meter) grass-topped building discretely situated on 3.74 acres (1.51 hectares) of rolling grassland northwest of Belfast. (Photo by Peter Morrison/AP Photo)





General clerical roomis seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK 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 metre of earth. (Photo by Clodagh Kilcoyne/Reuters)





Lounge room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Long corridor is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A BBC broadcast room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Clock and speaker are seen in the conference room at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Blast door leads to the exterior of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





BBC broadcast room in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Tea making facilities are seen in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Corridor is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The generator room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Corridor is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Conference roomis seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A man ilumintaes the temperature gauge of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Instrauctions for the cooking facilities are seen in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Trees surround the entrance of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The back-up telephone is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A path leads to the entrance of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A BBC broadcast room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Long-life tins of food are displayed in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The main generator room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A bedroom dormitory is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Long-life tins of food are displayed in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Long-life tins of food are displayed in the kitchens of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The escape hatch is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The blueprint maps of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War are displayed afterit came up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The generator indicators light up in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A blast door leads to the exterior of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The sick bay room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A message chute is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The fresh air filter room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The control centre of all the doors of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War is seen after it came up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The legal quarter is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Light comes in from the open blast door at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The operations room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





TThe entrance and for sale sign are seen outside a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The entrance is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





Recording devices are seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The water filter room is seen in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





The entrance is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





A decontamination tap is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)





An operations guide to a telephone console is seen at a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. (Photo by Clodagh Kilcoyne/Reuters)