“Even though Tate Modern’s home, the former Bankside power station, is a colossus, the sheer number of people visiting throughout the year has made an extension almost inevitable. Today, the London Borough of Southwark approved plans for Tate Modern 2, an 11-storey, brick-clad pyramid – of sorts – designed by Herzog and de Meuron, the Swiss architects who transformed the redundant power station across the Thames from Wren’s St Paul’s Cathedral nearly a decade ago.”