ROME – Trevi Fountain, one of the most iconic structures in this city of monuments and important ruins, marked the completion of a years-long restoration project on Wednesday with the debut of 100 energy-saving LED lights that only add to its luster.

The new lights were activated in a ceremony led by Rome Mayor Virginia Raggi and the CEO of municipal utility Acea, Stefano A. Donnarumma.

Ten of the new lights were placed behind the figure of the Greek sea-god Oceanus, while the other 90 were distributed around the rest of the monumental fountain.

The new lighting will require 70 percent less electricity than the previous conventional lights, according to Acea.

In her remarks during the ceremony, Raggi expressed gratitude to luxury fashion firm Fendi for helping to fund the Trevi restoration as part of its Fendi for fountains initiative.

The mayor also praised Acea for working with the Capitol Cultural Heritage agency to reconcile the demands of artistic display with respect for the environment.

Designed by Nicola Salvi on a commission from Pope Clement XII and completed in 1762 by Giuseppe Pannini, Trevi is the largest Baroque fountain in Rome.

The fountain, part of the Palazzo Poli, was built at the terminus of the ancient Acqua Virgo aqueduct, inaugurated in 19 BC by Marcus Vipsanius Agrippa, hero of the Battle of Actium and son-in-law of the Emperor Augustus.

Trevi is a nearly obligatory stop for visitors to Rome and people around the world who have never set foot in the Eternal City are familiar with the fountain thanks to its appearance in films such as “Roman Holiday,” “La Dolce Vita” and “Three Coins in the Fountain.”

The last-named movie took its inspiration from the practice of tossing coins into the Trevi Fountain.

Tradition holds that the correct procedure is to hurl the coin over the left shoulder using one’s right hand.

Coins totaling 1.4 million euros ($1.5 million) found their way into the Trevi Fountain in 2016, according to the official estimate.