The new building is ten-storeys on top of The Tanks – the world’s first gallery spaces dedicated to live art, film and installations – its height responding to the chimney of the existing Tate Modern building which was originally designed as a power station by Giles Gilbert Scott in the 1950s. Its twisting, pyramid-like shape will be a memorable addition to London’s skyline and will offer 60% extra space for visitors to explore.
From The Tanks on Level 0 you can go all the way up to Level 10 and enjoy the spectacular new roof terrace with 360-degree views of the river Thames, St Paul’s Cathedral and the dramatic London skyline.
Diana's Photos 
I lve the way these shots meld together. I was there recently and was impressed with the building’s sense of space and spartan appearance.
Yes it is very spartan as you say but of course then it does not detract from the art
Not at all, I think it allows it to take centre stage. The building is impressive in any case.