In the square in front of Palazzo Barberini is another gift from Pope Urban VIII to himself and his family: Triton Fountain. According to mythology, this merman was the messenger of the sea and son of Poseidon. The Greek god is portrayed blowing a conch shell which settled or agitated the seas. Fontana del Tritone was sculpted from travertine limestone by Gian Lorenzo Bernini and erected in Piazza Barberini in 1643.