It will create more spaces for displaying the collection, performance and installation art and learning, all allowing visitors to engage more deeply with art, as well as creating more social spaces for visitors to unwind and relax in the gallery."[3] Arts philanthropist John Studzinski donated more than £6 million to the project.[4][5] The extension to Tate Modern opened in 2016 as The Switch House and, in 2017, was renamed the Blavatnik Building after Anglo-Ukrainian billionaire Sir Leonard Blavatnik, who contributed a "substantial" amount of its £260m cost.