from a Midlands Today TV News film clip, a disused tunnel system and underground complex 100 ft below Birmingham's City Centre built to withstand an atomic bomb but (it) was hopelessly outdated before construction had even finished. it was abandoned and mothballed not long afterwards, they (Birmingham City Council) are currently looking for a buyer to take it off their hands!

apparently there's offers from Archive Storage companies, wine storage and even Mushroom farming!