The famous square built by the Pamphili family at the behest of Pope Giovanni Battista Pamphili. Beautiful both day and night, especially if you want to admire it from above.
Being in the center of Piazza Venezia you can admire many monuments and historic buildings including here: Il Vittoriano (which would then be one of the newest monuments in Rome), Palazzo Venezia which was built at the time on commission of the Venetian cardinal Pietro Barbo with travertine taken from the Colosseum and from the Teatro Marcello. Trajan's column with its almost 40 meters high. The Buonaparte Palace.