Vis-a-vis Mount Vesuvius, the rai·son d'ê·tre of Herculaneum and Pompeii’s posthumous fame, Herculaneum is situated closer to the volcano than Pompeii. Situated on the western foothills of the mountain, it is just 13 km away from the mountain.
Pompeii is located on the south-eastern base of Vesuvius, about 27 km away. Their respective locations were crucial determinants of the type of destruction both cities underwent in 79 AD.