Cambridge Sunday Market is situated

on the Market Square, 

 in the heart of the City Centre,

 on Market Street,

Close to Lion Yard Shopping Centre,

In front of the Guildhall,

round the back of the Tourist Information Office,

near  Petty Curry,

in front of 

 the Marks and Spencer's that sells food,

 and by

Great St Marys Church ,

 and

Kings College is near by.

In case your confused

 here's a link to a Map from  Vist Cambridge