The Tate Modern in London is Britain's national museum of international modern art. The galleries are housed in the former Bankside Power Station, which was originally designed by Sir Giles Gilbert Scott, the architect of Battersea Power Station, and built in two stages between 1947 and 1963. The power station closed in 1981. The building was converted by architects Herzog & de Meuron and contractors Carillion, after which it stood at 99m tall.