Herculaneum occupied the Bay of Naples beneath Mount Vesuvius. Ancient tradition credited Hercules with its foundation, while archaeology points to Oscan settlement followed by Etruscan, Greek, and Samnite influence. Rome gained control during the Social War in the early first century BCE. The town became a municipium and a prosperous coastal community of houses, shops, baths, temples, and public buildings. Wealthy residents and visitors built elaborately decorated homes overlooking the sea, though craftspeople, laborers, enslaved people, and traders also sustained daily life.

An earthquake in 62 CE damaged the Vesuvian region, and repairs were still shaping buildings when Vesuvius erupted in 79. Herculaneum initially received less falling pumice than Pompeii, leading many inhabitants to flee toward the shore. Later pyroclastic surges of superheated gas and debris overwhelmed the town. Hundreds who sheltered in waterfront chambers died almost instantly. Successive flows buried Herculaneum beneath roughly twenty meters of hardened volcanic material, altering the coastline and sealing upper stories, wooden doors, furniture, food, textiles, and papyrus in unusually favorable conditions.

The ancient city remained deeply buried beneath later settlement. A well dug in 1709 reached the Roman theater, and tunneling produced sculptures for elite collections. Systematic exploration began in 1738 under Charles of Bourbon, king of Naples. Engineers drove shafts and galleries through the hard deposit, removing paintings, bronzes, inscriptions, and statues while recording them unevenly. The discoveries stimulated European fascination with antiquity and influenced art and design, but the treasure-oriented methods damaged contexts and left hazardous tunnels.

Open-air excavation expanded in the nineteenth and especially twentieth centuries. Archaeologists exposed houses and streets while confronting the modern town built above most of the site. The Villa of the Papyri yielded a unique library of carbonized philosophical scrolls, whose fragile texts continue to be studied with new imaging technologies. Excavation of the ancient shoreline in the 1980s revealed more than three hundred victims, overturning the earlier belief that nearly everyone had escaped and restoring the human disaster to public interpretation.

UNESCO included Herculaneum with Pompeii and Torre Annunziata in 1997. Exposure brought water damage, vegetation, structural failure, and wear, making conservation more urgent than further clearance. International partnerships improved drainage, roofing, documentation, and maintenance. Herculaneum’s history extends beyond the eruption: it encompasses Roman inequality and leisure, sudden catastrophe, Bourbon collecting, the birth of archaeology, modern urban conflict, and evolving treatment of human remains. Its preserved wood and upper floors offer evidence unavailable at many Roman sites, while the unexcavated majority remains a protected archive for future generations.

Excavation created its own history at Herculaneum. Early tunnellers removed portable sculpture and paintings with little record of context, while open-area campaigns exposed buildings to rain, sunlight, vegetation, and groundwater for the first time since antiquity. Conservation partnerships have since emphasized drainage, roofs, documentation, and maintenance rather than endless uncovering. New scientific work on food, wood, sewers, skeletal remains, and carbonized manuscripts continues to revise understanding of health, diet, literacy, and the eruption. Herculaneum is thus not simply a Roman town stopped in one instant. It is a site shaped by ancient urban change, catastrophic burial, Bourbon collecting, modern archaeology, and the continuing ethical problem of balancing research, visitor access, and preservation.