The new-look and expanded Tate Modern will open in 2016, following a £260m revamp featuring a 10-storey extension and 60% more gallery space.
Around 5,000 schoolchildren will be the first visitors on 16 June next year with a dedicated preview day before the gallery opens to the general public.
The expanded Tate Modern, designed by architects Herzog & de Meuron, is being hailed as the most important new cultural building in the UK since the British Library in 1998.
The organisation considers the project to be a completely new gallery, not just an extension. It is effectively in three sections on the site of what was the Bankside power station: the existing boiler house closest to the river, the Turbine Hall in the middle and the new Switch House extension to the south adding 20,700 sq m (222,813 sq ft) of gallery space.
It is a vast project, one which was originally meant to be completed in time for the London 2012 Olympics. When it became clear that was never going to happen, Tate opened up the tanks space, based in underground former oil tanks, for 2012 only.
The new Tate Modern will get a complete rehang of the permanent collection, with far more space for performance and interactive art. […]