Eastney Beam Engine House preserves the heavy engineering that kept Victorian Portsmouth functioning behind the scenes. The restored beam engines, pumps, and brick industrial buildings are a reminder that a naval city also depended on water, sewage, and municipal infrastructure.
Opening is limited, so this is one to check before crossing Southsea. If the engines are in steam or volunteers are on hand, it becomes much more than a static display and makes a strong companion to Portsmouth's better-known maritime museums.