Cardiff in making iron and later steel, brought to the sea by packhorse from Merthyr Tydfil. This was first achieved by the construction of a long canal from Merthyr (510 feet above sea-level) to the Taff Estuary at Cardiff. Eventually the Taff Vale Railway replaced the canal barges and massive marshalling yards sprang up as new docks were developed in Cardiff – all prompted by the soaring worldwide demand for coal from the South Wales valleys. At its peak, Cardiff's port area, known as Tiger Bay, became the busiest port in the world and – for some time – the world's
Cardiff Bay Barrage Cardiff Bay Barrage Cardiff Bay Barrage lies across the mouth of Cardiff Bay, Wales between Queen Alexandra Dock and Penarth Head. It was one of the largest civil engineering projects in Europe during construction in the 1990s. The origin of the scheme dates back to a visit by the Secretary of State for Wales Nicholas Edwards Conservative MP for Pembrokeshire to the largely-derelict Cardiff docklands in the early 1980s. An avid opera enthusiast, Edwards envisaged a scheme to revitalise the area incorporating new homes, shops, restaurants and, as a centrepiece, an opera house at the waterside. However the tidal nature