The Epic of Gilgamesh (Mesopotamia) – author unknown

Iliad (Greece) – ascribed to Homer

Odyssey (Greece) – ascribed to Homer

Aeneid (Rome) – Virgil 

Metamorphoses (Rome) – Ovid

Beowulf (Britain) – author unknown

Both Paradise Lost and Paradise Regained (Britain) – John Milton

Of course there are loads of more amazing epic poems and stories to read, but these are for me some that are must reads. Enjoy.