Oh there are many wild ideas… I don’t know of any other pyramid shaped ones though.
For other shapes, I think The Line in Saudi Arabia is worth a mention, because it’s actually being built. Slave labour and other issues aside, it’s interesting that they attempt to follow through on such an insane plan.
This design project might interest you, but do notice that it is not currently possible.
https://en.wikipedia.org/wiki/Shimizu_Mega-City_Pyramid
That was an incredibly interesting read. Do you know of any other planned mega structures like that?
Oh there are many wild ideas… I don’t know of any other pyramid shaped ones though.
For other shapes, I think The Line in Saudi Arabia is worth a mention, because it’s actually being built. Slave labour and other issues aside, it’s interesting that they attempt to follow through on such an insane plan.
https://en.wikipedia.org/wiki/The_Line,_Saudi_Arabia