Local planning authorities also have an important role in protecting World Heritage Sites and their settings from inappropriate development via the spatial planning system.
Mae gan awdurdodau cynllunio gyfraniad pwysig i’w wneud o ran diogelu’r Safleoedd Treftadaeth y Byd a’u lleoliadau rhag datblygiad amhriodol drwy’r system gynllunio ofodol.