That's very, very helpful Mike! Your series of maps makes it really clear how the arcades connected up together. And it's interesting how many branches there were. Like a shopping (hate to use the word) 'mall'. Looks like one branch of the triangular section disappeared when the Big Top Post Office was built. It also looks like the original path of the arcades is pretty much the same as the modern sections we see today. Although it's not confirmed, I feel that these arcades must have originally been developed over some time, then linked together, rather than created at the outset as one arcade. They would have done a good job in linking up Corporation St, New St and High St, with shoppers avoiding exposure to the elements! And there seems to have been a bit of 'Arcade-mania' going on too, what with the one cutting across Temple Row to Snow Hill, another near Fore Street off Corporation St, the Burlington and the Piccadilly Arcades, to name a few. But the best bit for me is the 'City' section that remains on Union St/Union Passage. It seems to have been nicely refurbed. My memory of it was of a very neglected area. So good to see it in better shape and giving us a glimpse of how it would have been 110 years ago.Thank you. Viv.