I love the concept of massive buildings / structures in areas without such but I don’t think the city people would enjoy such buildings in actuality. The massive circular mine in Russia comes to mind (no pun intended).
Are you thinking of something like this https://en.wikipedia.org/wiki/Ostankino_Tower ?
It's kind of nice. You can usually keep track of where you are in Berlin, by triangulating around the tower, which is visible from a great distance and in one of the "centers" of Berlin [1].
If you're ever lost, you can just walk towards it, and eventually you'll end up in the one of metro's nexus at Alexanderplatz.
[0]: https://en.wikipedia.org/wiki/Fernsehturm_Berlin#/media/File...
[1]: https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2F...