Cultural myths/legends
The Gilgamesh story is interesting because it predates the Bible and contains some of the myths/legends that recur in various cultures. Primarily the great flood but also the 'hero' defeating the monster. I also found the end-notes to be entertaining. Among those is one that notes one of the earlier translators,George Smith, omitted some details in translating because they were 'hardly adapted for general reading." (i.e. too racy for the Victorian era.)