If the term of being "Grandfathered in", in the term of land means that if there is a zoning changes or a territory change, this means the person's who owns the land, will not change at all. Their land will be the same, no additional zoning changes, etc.
This is an opinion question and can have differing answers that are correct, but I'm going to give it a shot.
Yes, I think that holy sites add significance to cultural groups. This is because you can make a pilgrimage to a holy site and partake in religious events there, and this gives you a sense of satisfaction and achievement.
I believe that It runs to a lake, I'm wrong I'm sorry. but other than that I'm happy to help! :)