Found in the middle of a city park with many pine trees around, I think it’s fly agaric.

It was common on Christmas cards in Victorian and Edwardian times as a symbol of good luck and its colours are thought to have been the inspiration for Santa Claus’s red and white suit.

https://www.woodlandtrust.org.uk/trees-woods-and-wildlife/fungi-and-lichens/fly-agaric/