Hi Froth. This artist's impression is from the Birmingham Post commentary on the plans for the Square. Looks like it's possibly an underground tank (?) for that enormous, oblong water feature. Viv.
Link here https://www.birminghampost.co.uk/news/regional-affairs/10m-centenary-square-revamp-branded-11768316
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Look at 'Centenary Square' now then look at 1st pic in Vivienne's post #27 ! I'll say now more or I'd be banned. Eric
Sorry I haven't read all of the thread, but does anyone know what is going to be built on the old registry office site.