PLAYGROUND public park where there is an area for entertainment, which can be for children and also adults. For example, in the big ones there are roller coasters, large slides, wheels or waterwheels, free fall chairs, high-speed air trolleys, dark tunnel, crazy carts and other electromechanical games that defy gravity. The first amusement park was opened in 1583 in Bakken, near Copenhagen. But when you visit Copenhagen you go to the ABBA museum and the TIVOLI GARDENS, a playground that is nearby and they tell you that it is the oldest in the world but it is the fourth (active), opened in 1843.