Temple of art: The Tate Modern's extension06/16/2016June 16, 2016The cultural event of the year for London is the opening of the Tate Modern's new extension, giving it 60 percent for space for visitors to explore. It was designed by renowned Swiss architects Herzog & de Meuron.Copy linkImage: EBUAdvertisementTemple of art: The Tate Modern's extension04:25This browser does not support the video element.