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,
Fontana dei Quattro Fiumi had the authors arrested, and disguised spies patrol the Pasquino statue and Piazza Navona The streetvendors of the market also opposed the construction of the fountain, as Innocent X expelled them from the piazza. The Pamphilij pope believed they detracted from the magnificence of the square. The vendors refused to move, and the papal police had to chase them from the piazza. Roman Jews, in particular, lamented the closing of the Navona, since they were allowed to sell used articles of clothing there at the Wednesday market. Fontana dei Quattro Fiumi Fontana dei Quattro Fiumi ("Fountain of the Four Rivers")