Interior view of the Blavatnik Building at Tate Modern gallery of contemporary art on 17th October 2023 in London, United Kingdom. Named after philanthropist Len Blavatnik, a generous donator to the gallery, this was originally and temporarily called the Switch House. Tate Modern is based in the former Bankside Power Station in Southwark and is one of the largest museums of modern and contemporary art in the world. As with the UKs other national galleries and museums, there is no admission charge for access to the collection displays, which take up the majority of the gallery space. The redevelopment of the space was undertaken by architects Herzog & de Meuron.