A Swedish chain of entertainment centres aimed specifically at kids aged 12 and under, Wrocław's 'Loopy's World' is apparently the biggest playpen in PL. As mad as they come, with features including slides, trampolines, ball pits, a climbing wall, and even a train, this is the new face of playgrounds, and the sort of place that will have you wishing you were still a young whippersnapper. Unfortunately it's a 40-minute drive north of the city in a shopping mall.