The Boscoreale water boiler

The Boscoreale water boiler is a uniquely preserved 1st-century BCE Roman heating and plumbing artifact. Unearthed at the Villa della Pisanella in Italy, it is the only entirely intact Roman boiler ever found. It's complete with its original lead pipes and bronze valves. The heating chamber is made of bronze, the water lines are expertly soldered lead. The metal container was connected directly to a furnace. It heated water and generated steam for the villa’s kitchen, private baths, and underfloor heating system. (hypocaust) The boiler was encased and preserved by volcanic ash during the eruption of Mount Vesuvius in 79 CE. Its intricate system of pipes, valves, and distribution networks reveals the sophistication of Roman hydraulic engineers.