An unexpected throughfare

Norwich is a city of contrasts.  In parts it is a city of a million flints, reflecting its county's underlying geology, in parts it is Mediaeval, in parts is it nondecript in terms of vanilla-seeming brick high-street architecture. The Royal Arcade, with its non-obvious entrance, is a combination of Victorian and Art Nouveau and is a visual treat.  Yes, I am biased; Art Nouveau is my favourite architectural and decorative style.