Roof Terrace

You're standing 10 storeys up at One New Change, staring directly at Christopher Wren's masterpiece. St Paul's Cathedral fills your entire view, lit up at night or gleaming white in daylight, with the Thames snaking beyond. Unlike the paid viewing platforms that charge tourists £18, this terrace costs nothing. It's genuinely one of London's best free viewpoints, which means it gets busy (especially weekends), but the sightlines are unbeatable. There's a café up here too if you want to sit with a coffee while the City sprawls beneath you.