#4
Tate Modern turns a riverside power station into a cathedral of contemporary ideas. Since 2000 its Turbine Hall-152 metres long and 35 metres high-has hosted artworks at city scale, from a man-made sun to a carpet of porcelain seeds. Inside, you move between twentieth-century giants-Picasso, Rothko, Bourgeois-and global voices reshaping what art can be. The 2016 Blavatnik Building adds dramatic galleries and a 360° viewing platform over St Paul's and the Thames. Entry to the collection is free; major exhibitions are ticketed. Start in the Turbine Hall, then climb gradually to Level 10 for sunset views. Expect lively crowds, strong coffee, and a shop that tempts even sceptics.
