This is my favourite shop in Dortmund. A whole building full of sports clothings and other sport items. Often a bargain is to be found here.
On the ground floor there is a big screen where they show football games. Well, I only ever visited the shop on Saturdays so I don't know about the other days.
Various: Looong shopping street
Dortmund has a long pedestriansed shopping street, the Westenhellweg. Here you can buy all you want. In December you find a huge Christmas tree and a Christmas market around this area too.