Heorot is the great mead hall built by Hrothgar, which has been invaded and controlled by the monster Grendel for twelve consecutive years. Heorot is described as a sturdy, magnificent building that is significantly larger than any other structure around. Heorot was built by Hrothgar's bravest and best men who fortified the structure in stone to withstand anything. Heorot is a place of fellowship and a source of comfort from the harsh environment outside. It is described as having a high roof with gables that are shaped like horns of the hart. It is also adorned with gold, has thick, sturdy walls, and functions as a seat of government. Heorot also symbolically represents the achievements of the Scyldings and King Hrothgar.

Shortly after Beowulf arrives in Denmark with his accomplished soldiers, he spends the night in Heorot and patiently waits for Grendel to arrive. Once Grendel tears open the door to the great mead hall, he proceeds to kill an unsuspecting soldier before wrestling with Beowulf. During the struggle, benches and tables are broken in half as the monster attempts to break free from Beowulf's grip. Fortunately, Heorot's walls remain intact, and the structure does not collapse during the vicious brawl because it is extremely fortified and sturdy.

The collapse of the hall would have symbolized a defeat of the warrior culture and reflected weakness among the Scyldings. Beowulf fatally wounds Grendel during the fight and banishes the monster while simultaneously preserving the great mead hall.