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 Police Station Cardiff Bay Police Station Cardiff Bay Police Station (which replaced Butetown Police Station) is the South Wales Police Eastern Division area headquarters and custody suite, located on James Street, Cardiff, Wales. Butetown Police Station (on the same site as the new headquarters) was built circa 1968 as a two-storey community police station for Butetown, Cardiff. It was a notable location for events surrounding the investigation, arrests, detention and questioning of the suspects following the murder of Lynette White in 1988, which led to the wrongful imprisonment of three Cardiff men. Butetown Police Station was demolished in November 2006 to make