When you arrive at the Market square, the local Toripolliisi (Market square policeman) welcomes you. At market square, you can get to know the products and visit the old granaries, which serve as gifts shops, clothes and shoe stores as well as lovely cafeterias and restaurants.
In the traditional market hall you can buy fresh bread, meat and fish. Market square also has numerous markets. Market square, granaries and market hall is a great place to just walk around, enjoy refreshments as well as find souvenirs and presents.
https://www.discoveringfinland.com/destination/oulu-market-square-hall/