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, Maryland and in numerous federal buildings in Washington, D.C. Formerly home of Slate Ridge Elementary School, shut down in the early 1980s, the building is now used for apartments. The town, a part of the Whiteford-Cardiff Historic District, was added to the National Register of Historic Places in 2005. The town and historic district are notable for their strong Welsh ethnic heritage, which is reflected in the name of the town as well as the local architecture, and the Welsh language choir of some renown based nearby. Cardiff, Maryland Cardiff is an unincorporated community in Harford County, Maryland, United States. The