York Maze is a seasonal family attraction east of the city, built around a large maize maze that is redesigned each year. The maze is the hook, but the site also has smaller children's mazes, play areas, rides, shows, and food.
It is not a historic York sight, but it is a useful half-day option for families who need something more active than museums and medieval streets. Check opening dates before going, as the main maze depends on the growing season.