What is a good, high-style way to say a thing or a person is not fallable to oblivion?
I considered the following variants which I found inadequate:
Unforgettable - this basically means "impressing" and that the thing cannot be forgotten by a single person.
Of imperishable fame - this implies the thing or the person is already widely famous
But the meaning I need is that the thing or the person simply cannot fall into oblivion because it/they would be remembered by some.