Rome's world-famous Trevi Fountain has been illuminated with new energy-saving lights, marking the completion of a restoration project.

A total of 100 LED bulbs were switched on by Rome's mayor Virginia Raggi.

The new lights include 90 under the fountain's emerald water and another 10 on the shelves opposite the fountain and the shells behind the statue of Oceanus.

It is hoped the move will significantly cut the amount of energy used by the monument.

The Trevi Fountain is one of the most popular attractions in the Italian capital – visitors flock to the site to toss coins over their shoulders into its water for luck.

It was reopened to the public in 2015 after a 2.4 million euro ($2.7 million) major restoration sponsored by Rome-based fashion house Fendi.