Why go
The Senedd and Wales Millennium Centre make Cardiff Bay more than a waterside extension of the centre. Comparing them with the castle and Cathays Park helps explain the city's change of scale and purpose, from a coal-exporting port to the capital of Wales.
The full story
Cardiff was still a small town before the industrial growth of the nineteenth century. Coal from the surrounding region gave its port a much larger role, bringing trade and a rapid expansion that changed the city. Cardiff gained city status in 1905 and became the capital of Wales in 1955. Those dates help explain why its ancient castle sits within a city whose national role is comparatively recent. The waterfront tells the next part of that story. Redevelopment from the 1990s gave the former docklands a different purpose, with the Senedd and Wales Millennium Centre among its defining buildings. For a visitor, the useful distinction is between the centre's castle and civic architecture and the Bay's concentration of political and performing-arts institutions. A visit focused on the centre gives one view of Cardiff; adding the Bay makes the change from working port to national capital easier to see.