Inside the £120m HQ

building – which will be used for events and filming, utilising lighting systems from the floors above.

The public will be able to look into floors above to see BBC staff working. It will also have: A water capture system to feed into the water supplies of its toilet facilities;

A garden area on the fourth floor, which will be used for filming things like weather forecasts, with prime views over Cardiff Central Railway Station;

200 spaces for bikes in the basement with shower and dry room facilities;

The basement will also be able to accommodate outside broadcast trucks, as well as a limited number of car parking spaces.

The building will be half the size of its existing and ageing 1960s built Broadcast House in Llandaff and around the same size as the main broadcast building at BBC’s flagship Salford Quays development in Manchester.

Over a decade it is expected to have a direct or wider economic impact of £1bn.

BBC Wales has also announced plans to provide new training opportunities to over 250 people over the next two years, including an additional 20 full time, paid trainee and apprenticeship placements with the organisation.

The development scheme will focus on attracting people from under-represented communities, putting them through an intensive training programme designed by the BBC Academy.

Director of BBC Wales, Rhodri Talfan Davies, said: “We’re building careers for the future.

“The additional places will be available from 2018, which means the skills within the workforce will be even stronger when we relocate to Central Square.

“Combined with the cutting-edge technology installed on site, this will be a great place to work.

“This is a very significant investment by BBC Wales in creating 250 development opportunities, giving those who may not have considered a career with us in the past a real flavour of how we operate.”