Fountain Piazza Barberini (1642), by Gian Lorenzo Bernini, is a masterpiece of Baroque sculpture, representing Triton, half-man and half-fish, blowing his horn to calm the waters, following a text by the Roman poet Ovid in the Metamorphoses. The Triton fountain benefited from its location in a valley, and the fact that it was fed by the Aqua Felice aqueduct, restored in 1587, which arrived in Rome at an elevation of above sea level (fasl), a difference of in elevation between the source and the fountain, which meant that the water from this fountain jetted sixteen feet straight up into the air
Piazza Colonna of the Italian government. The east side is taken up by the 19th century public shopping arcade Galleria Colonna (since 2003 Galleria Alberto Sordi), the south side is taken up by the flank of Palazzo Ferrajoli, formerly the Papal post office, and the little Church of Santi Bartolomeo ed Alessandro dei Bergamaschi (1731-35). The west side is taken up by Palazzo Wedekind (1838) with a colonnade of Roman columns taken from Veii. The piazza has been a monumental open space since Antiquity; the temple of Marcus Aurelius stood on the site of Palazzo Wedekind (TCI). The fountain in the piazza