Viewpoints & Towers — London

A 135-metre observation wheel on the South Bank, built for the Millennium and still one of the best ways to see the whole of London laid out beneath you.

London's highest free public garden, occupying the top three floors of the "Walkie-Talkie" tower, with landscaped terraces and sweeping views across the City.

Christopher Wren's Baroque masterpiece and dome-topped survivor of the Blitz, rebuilt after the Great Fire and still one of London's most recognisable silhouettes.

London's tallest skyscraper, a glass-clad spire by Renzo Piano soaring above London Bridge, with an observation deck offering 360-degree views across the capital.

London's iconic Victorian Gothic bascule bridge across the Thames, with glass-floored high-level walkways and steam-powered engine rooms open to visitors.