Herculaneum

In 79 AD, when Mount Vesuvius erupted, it didn't just bury Herculaneum under ash — it encased the entire town in a superheated flow of volcanic material up to 20 metres deep. That catastrophe, devastating as it was, turned out to be an extraordinary act of preservation. While Pompeii gets all the fame, Herculaneum — a prosperous Roman resort town home to wealthy merchants and aristocrats — survived in startling detail. Wooden furniture, carbonised food, painted walls in vivid colour, even a library of scrolls: the stuff that normally rots away over two millennia survived here because the pyroclastic surge sealed everything almost instantly.

Walking through the site today feels genuinely uncanny. You descend into an excavated pit below the modern town of Ercolano, and suddenly you're on actual Roman streets, looking through doorways into rooms where the mosaic floors are still intact, where painted frescoes cling to walls, where a wooden bed frame sits in the corner of a bedroom. The House of the Stags, the House of Neptune and Amphitrite (named for its extraordinary seafood mosaic), the intact thermopolium where Romans grabbed their street food — the specific details here are what make it extraordinary. There are also the skeletal remains of over 300 people found huddled in the ancient boat sheds at the waterfront, one of the most sobering sights in all of Italy.

Herculaneum is significantly smaller than Pompeii, which is actually a point in its favour — it's walkable in a focused half-day, less crowded, and the preserved detail per square metre is arguably higher. The site is managed by the Herculaneum Conservation Project, a collaboration that has done serious work on stabilisation and interpretation. Come in the morning when the light is good and crowds are thin. The modern town of Ercolano sits directly above and around the excavation, which gives the whole experience a strange layered quality — ancient Roman streets literally beneath someone's apartment building.