Beowulf is an Old English epic poem about the hero Beowulf. It takes place in Scandinavia and is one of the earliest works of English national literature. The epic follows Beowulf as he fights Grendel, Grendel's mother, and later a dragon. The poem uses poetic devices like caesuras, alliteration, and kennings that were common in Old English poetry. It presents Beowulf as an ideal epic hero who embodies the values of his society through his heroic acts and deeds.