In Search of the Brumphalos

In Search of the Brumphalos, a meander around Birmingham city centre attempting to locate the midpoint of this sprawling metropolis. Does a city have a heart? A navel? A nucleus? How do you measure it? We'll be considering these questions and visiting some of the contenders - some obvious, some less so. We'll be finishing up at the precise geometric centre of the city as determined by science... and it may not be where you expect it to be.