The Fountain of Neptune is one of three fountains in the Piazza del Popolo in Rome. Entering the piazza from the Via del Corso it is the fountain on the left side.
Fountain of Neptune Rome
History and description

The Fountain of Neptune (Fontana di Nettuno) was carved by Giovanni Ceccarini and designed by Valadier. It was built between 1822 and 1823 and was the endpoint of the then recently built new Vergine Nuovo Aqueduct.
It represents the sea god Neptune with his trident, two tritons and two dolphins.
The water from the fountain is collected in a basin below the sculptural group.
Initially Valadier had wanted to create two small lakes at the bottom of the fountain, but this idea was never realized.
The Fountain was last restored in 1997. It is not to be confused with the Fountain of Neptune in the Piazza Navona.