Are there other interesting mentions of Eden in the rest of the Bible?

Perhaps the most interesting is at Ezek. 28:13, which says the wicked king of Tyre was at one time

…in Eden the garden of God;
every precious stone was thy covering,
the sardius [ruby], topaz, and the diamond…

And further, “Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.” (Ezek. 28:15) In this way, the story of the Fall was recapitulated but in connection to “the prince of Tyrus” who said, “I am a God, I sit in the seat of God” (Ezek. 28:2)—a passage often thought to have a second meaning referring to the tempter in the Garden, usually understood to mean Satan.