What’s the equivalent of Walmart in Europe? Where do you go to see ‘the bottom f

What’s the equivalent of Walmart in Europe? Where do you go to see ‘the bottom fish’?

Um. Let me ask it differently. In the states we have sites where people post ‘walmart photos’, which means the underclass captured being underclass in the wild.

Are there any ‘underclass attractors’ or equivalent shops where people take equivalent photos?