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,
Tourism in Italy main sights in the city include, the Trevi Fountain, Piazza Navona, Roman Forum, Castel Sant'Angelo, the Basilica of St. John Lateran, the Spanish Steps, Villa Borghese park, Piazza del Popolo, the Trastevere and the Janiculum. Milan is one of Europe's most important tourist destinations, and Italy's second; with 6.05 million international arrivals as measured in 2014, it placed itself as the 24th most visited city in the world. According to a particular source, 56% of international visitors to Milan are from Europe, whilst 44% of the city's tourists are Italian, and 56% are from abroad. The most important European Union