Riddle Help

General
#1

I got this one:

They say it was part of a man,
and that it was for those who went by sea.
Where once radiance, then it did wan
Leaving unending evening for all to see

Bobbins didn’t have an answer listed. I tried Calacirya, without success.

Any ideas?

#2

“Valinor” might fit, since it was once part of Aman (but later separated to keep mortals out) and was home to the Two Trees.