Cardiff, Welsh Caerdydd, city and capital of Wales. Cardiff exists as a city. It is located within the historic county of Glamorgan (Morgannwg) on the Bristol Channel at the mouth of the River Taff, about 150 miles (240 km) west of London. The origins of its name are a point of debate but are widely believed to have come from an English corruption of the original Welsh title Caer-Taff (Fort on the Taff).
Cardiff is the capital and largest city in Wales and the eleventh-largest city in the United Kingdom. The city is the country’s chief commercial centre, the base for most national cultural and sporting institutions, the Welsh national media, and the seat of the National Assembly for Wales.
The Cardiff metropolitan area makes up over a third of the total population of Wales.
Cardiff is a significant tourist centre and the most popular visitor destination in Wales.