"L'Eternale" - The proposed supertall skyscraper in the center of Rome that was never built
It would have been 330 meters tall, standing right in the center of Rome. Here's the article https://www.milanocittastato.it/evergreen/per-l-italia/l-eternale-il-grattacielo-piu-alto-del-mondo-che-si-voleva-costruire-a-roma/