The protected view from the Serpentine bridge to Parliament: 3.4 km, 215 m wide

The Serpentine bridge → the Palace of Westminster. 3.4 km long and 215 m wide where it arrives. The eye is 22.0 m above sea level (the centre of the bridge, Hyde Park); the target is 48.5 m. 45 postcodes lie in the corridor, across Westminster.