@icetoad.eth
The Rise Tower, a project Saudi Arabia is talking about pursuing, is the most ambitious building plan ever! I'm certainly skeptical if they can achieve this after The Line in Neom has thus far been problem after problem, but I'm still intrigued.
This thing would fit two Burg Khalifas (currently the world's tallest building) inside. It would be so tall that it would pierce through clouds and experience different weathers at different floors. This thing could change the meaning of what a building can be.