Cardiff Bay is the area created by the Cardiff Barrage in south Cardiff, the capital of Wales. The regeneration of Cardiff Bay is now widely regarded as one of the most successful regeneration projects in the UK. The Bay is supplied by two rivers to form a 500-acre freshwater lake round the former dockland area south of the city centre. The Bay was formerly tidal, with access to the sea limited to a couple of hours each side of high water but now provides 24 hour access through three locks.
Cardiff Bay was used as the high-tech urban setting for the Ninth Doctor Doctor Who episode Boom Townand for the Torchwood spinoff, whose makers deliberately avoided stereotypical portrayals of Wales in order to portray Cardiff as it is today, a modern urban centre. In the Torchwood series, there is a giant underground base, secretly under-neath the Bay named "The Hub" from where the Torchwood team work. There is also a lift from the hub into the plaza with a perception filter making anyone who stands on the spot "Not noticed"
