If you could build the Next Great Wall (on par with the cultural significance of China’s) what would it be like?

If you could build the Next Great Wall (on par with the cultural significance of China's) what would it be like? and when?
If you could build the Next Great Wall (on par with the cultural significance of China’s) what would it be like? and when?

Walls have traditionally been built to keep people and things separated, but I’d like to think that my existence as a wall helps to bring people and ideas together. There are many digital realms that allow people to share ideas (although they can also be divisive). So, perhaps the wall I’d build would be a virtual, communal space for all people to support each other.