Quidditch Pitch

A Quidditch Pitch is the area where a Quidditch match took place, typically in the shape of an oval, five hundred feet long and a hundred and eighty feet wide, with a small central circle of about two feet in diameter. At each end there are three hooped Goalposts of different heights, surrounded by a scoring area. The early barrel-goals had been replaced by baskets on stilts, but whilst these were practical, they did carry an inherent problem: there was no size restriction on the baskets, which differed dramatically from pitch to pitch.

In 1994, the Quidditch Pitch was used for a Maze in the Third Task of the Triwizard Tournament. In the middle of the Maze, there was a Portkey wich led Harry Potter and Cedric Diggory to the Graveyard, wich Cedric was killed in.

If you believe Cursed Child to be Canon, then in 2021 Albus Potter, Scorpius Malfoy and Delphini Riddle time traveled to 1994 , to humiliate cedric , because Delphi wanted Voldemort to rise again. She also killed Craig Bowker Jr. here.