Architecture of Rome huge and majestic Baroque squares (often adorned with obelisks), many of which were built in the 17th century. The principal squares are Piazza Navona, Piazza di Spagna, Campo de' Fiori, Piazza Venezia, Piazza Farnese and Piazza della Minerva. One of the most emblematic examples of Baroque art is the Fontana di Trevi by Nicola Salvi. Notable 17th-century baroque palaces are the Palazzo Madama, now the seat of the Italian Senate and the Palazzo Montecitorio, now the seat of the Chamber of Deputies of Italy. In 1870, Rome became the capital city of the new Kingdom of Italy. During this time,
Piazza Ruggero Settimo Piazza Ruggero Settimo Piazza Ruggero Settimo is a square of Palermo. Along with the contiguous Piazza Castelnuovo, it forms a single urban space, commonly called Piazza Politeama, by virtue of the presence of Teatro Politeama, the second most important theatre of the city after Teatro Massimo. The square is located between Via Ruggero Settimo and Viale della Libertà, near the historic centre of Palermo, and represents one of the most popular city's square. It is dedicated to the Sicilian patriot Ruggero Settimo and a monument depicting him (work of Benedetto De Lisi) is located at the centre of the square.