The protected view from the oak on Parliament Hill to Parliament: 7.0 km, 220 m wide

The oak on Parliament Hill → the Palace of Westminster. 7.0 km long and 220 m wide where it arrives. The eye is 71.6 m above sea level (east of the summit, at the prominent oak tree); the target is 51.3 m. 876 postcodes lie in the corridor, across Camden and Westminster.