Leeds Corn Exchange looks rather like a stone flying saucer that landed in 1864 and decided to stay. Cuthbert Brodrick, architect of Leeds Town Hall, designed this oval Grade II listed building as a trading floor for wheat, barley and grain, its domed roof glazed so merchants could inspect samples in good light.

Under the staircase, an original wooden lectern still bears the names of the firms that traded here. When the grain business faded, the hall hosted antique fairs and, in the early 1980s, at least one budgie show, its floor crammed with tables of birds. Today it’s filled with independent boutiques.

VoiceMap’s self-guided audio tour arrives via the old warehouses of The Calls, using the Corn Exchange to show how Victorian Leeds was rescued from soot and neglect, before heading to the arcades and the market where Marks and Spencer began as a penny bazaar.