You don’t have a palace like that built for your successor. You build it because you are planning to stick around for a very long time.
Yes, and the monstrosity that Nero built was torn down immediately after his death. The gold therein was melted down to replenish the Roman treasury, which Nero emptied to build the thing in the first place. The only thing which will outlive Erdogan is the memory of his vainglorious excess.
CC