5. Underground Bunkers
Being underground would be a pretty wise place to go if you needed to survive the Apocalypse. They're several that have been built due to wars and so fourth, so they are definitely out there. They're often secure and only have a few, if not only one entrance. If you have supplies together, you should be pretty safe. Depending on numbers of course. Assuming you're just the small group like in The Walking Dead, you should be able to work something out and be pretty safe.