what is the name of this kind of wall/architecture?

Is it a wall? Is it a fence? If so what is it called. In english or japanese both is good.
[https://static3.bigstockphoto.com/1/6/3/large1500/361148365.jpg](https://static3.bigstockphoto.com/1/6/3/large1500/361148365.jpg)

thanks <3

by CroverTV