Trevi Fountain, Central section, Rome, Oceanus (god of all water) in the central niche, continuing restoration work 2015.

The Trevi Fountain (Italian: Fontana di Trevi) is a fountain in the Trevi district in Rome, Italy, designed by Italian architect Nicola Salvi and completed by Pietro Bracci. Standing 26.3 metres (86 ft) high and 49.15 metres (161.3 ft) wide, it is the largest Baroque fountain in the city and one of the most famous fountains in the world. The fountain has appeared in several notable films, including Federico Fellini's La Dolce Vita and the Lizzie McGuire Movie.
The fountain at the junction of three roads (tre vie) marks the terminal point of the "modern" Acqua Vergine, the revived Aqua Virgo, one of the aqueducts that supplied water to ancient Rome. In 19 BC, supposedly with the help of a virgin, Roman technicians located a source of pure water some 13 km (8.1 mi) from the city. (This scene is presented on the present fountain's façade.) However, the eventual indirect route of the aqueduct made its length some 22 km (14 mi). This Aqua Virgo led the water into the Baths of Agrippa. It served Rome for more than 400 years.
Legend holds that in 19 BC thirsty Roman soldiers were guided by a young girl to a source of pure water thirteen kilometers from the city of Rome. The discovery of the source led Augustus to commission the construction of a twenty-two kilometer aqueduct leading into the city, which was named Aqua Virgo, or Virgin Waters, in honor of the legendary young girl. The aqueduct served the hot Baths of Agrippa, and Rome, for over four hundred years.
In 1629 Pope Urban VIII, finding the earlier fountain insufficiently dramatic, asked Gian Lorenzo Bernini to sketch possible renovations, but the project was abandoned when the pope died. Though Bernini's project was never constructed, there are many Bernini touches in the fountain as it exists today. Competitions had become the rage during the Baroque era to design buildings, fountains and even the Spanish Steps. In 1730 Pope Clement XII organized a contest in which Nicola Salvi initially lost to Alessandro Galilei – but due to the outcry in Rome over the fact that a Florentine won, Salvi was awarded the commission anyway. Work began in 1732 and the fountain was completed in 1762, long after Salvi's death, when Pietro Bracci's Oceanus (god of all water) was set in the central niche. It was officially opened and inaugurated on May 22 by Pope Clemens XIII It remains one of the most historical cultural landmarks in Rome.
The majority of the piece is made from Travertine stone, quarried near Tivoli, about 35 kilometers east of Rome.
The most recent restoration work began in June 2014 and was not completed in October 2015 when the picture was made. The fountain was reopened with an official ceremony on the evening of November 3, 2015. The restoration included the installation of more than 100 LED lights to improve the nighttime illumination of the fountain.

more on https://en.wikipedia.org/wiki/Trevi_Fountain