The Marforio is a fountain located in the Piazza della Rotonda in Rome, Italy. It is named after the marble it is made of, which is known as “marforio.”

The Marforio is not a single monument, but a group of several sculptures and fountains. The most famous part of the Marforio is the Tiber River god, a statue that was moved from the riverbed of the Tiber to its current location in the 16th century.

The Marforio also includes the statue of Pope Gregory XIII, who commissioned the refurbishment of the fountain in the 16th century. The fountain is known for its intricate carvings and detailed sculptures.

The Marforio is one of the most famous and visited landmarks in Rome. It is a symbol of the city and a testament to its rich history and artistic heritage.