A city of pure confection.

Chinese artist Song Dong is creating in the basement of Selfridges on London's Oxford Street a city made entirely of biscuits. From bourbons to hobnobs, he is using an estimated 72,000 teatime treats to build a part traditional, part modern city to highlight his concern that Asian cities are recreating common building designs rather than coming up with their own, original designs. To emphasise this, Dong has asked his helpers to make a lot of the buildings up - creating whatever comes to mind.

The city will be on display until 16.00 (GMT) when shoppers will be invited to help themselves to the biscuits. One artist helping Dong, Kieron Stone, expressed concerns about them being stale by then and gave this piece of advice: "Go for the ones at the bottom".