Westminster Bridge was returned to its original glory when its heritage lights were switched on this week.
It marks the completion of the final phase of the conservation project undertaken by Transport for London (TfL).
Westminster Bridge is one of the oldest bridges in London and is one of the most historic and photographed landmarks in the Capital.
Since 2003, it has undergone restoration from protection of the underwater piers to replacement of damaged fascias.
The refurbishment of the lanterns means that their original appearance now matches the rest of the bridge.
During the refurbishment, original materials such as copper and brass were used.
The lanterns have been treated with 'verdigris' which is a chemical that produces a greenish-blue pigment matching the original look.
Gold leaf and paint were also applied to match the main bridge fascia replacement works.
David Brown, Managing Director of Surface Transport at TfL, said: 'London's bridges are iconic sites in themselves and have played an important role in London's history and growth.
'Not only will the lighting refurbishment restore the original look of the bridge but will provide much improved lighting to ensure better pedestrian safety.'
During the programme, TfL consulted with English Heritage, Westminster and Lambeth councils.
The refurbishment was undertaken by Ringway Jacobs, one of TfL's Highways Maintenance Works Contractors.
As one of London's busiest foot and road bridges, disruption was minimised by undertaking work during off peak hours.
The restoration of the bridge began in 2003 and is part of TfL's £10bn Investment Programme.
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