The Garden of Eden, in human mythology, was a place where Adam and Eve - regarded as the first humans - lived after being created by God. The couple lived in the Garden until they were expelled from the Garden for eating forbidden fruit from the Tree of Knowledge.
In the 2290s, Captain Spock kept an image of Adam and Eve being expelled from the Garden in his quarters on board the USS Enterprise-A. He did this as a reminder to himself that all things would end. (TOS movie: Star Trek VI: The Undiscovered Country)