Here is a picture gallery of the most popular answers.
5. Henderson's Relish
When people think of Sheffield, the always think of Henderson's Relish. Photo: Chris Etchells
6. Sheffield United
Sheffield United fans who have moved away will certainly be missing Blades playing in the Premier League. Image: Sportimage Photo: Simon Bellis
7. Meadowhall
Shoppers, diners and cinema-goers are bound to miss the unique experience of a day at Meadowhall. Photo: Chris Etchells
8. Peak District
The lovely Peak District is conveniently right on Sheffield's doorstep. Photo: Bruce Rollinson