Tourism in Rome (with around 4 million tourists a year, making it the world's 39th most popular tourist destination). Other popular sites include St Peter's Basilica, the Forum Romanum, the Pantheon, the Trevi Fountain, the Spanish Steps, Via Condotti, Via Veneto, the Capitoline Museums, the Villa Borghese gardens, the Villa Giulia, Piazza Navona, the Basilica di Santa Maria Maggiore, the Basilica of St. John Lateran, the Piazza del Popolo, the Castel Sant'Angelo, the Campo de' Fiori, the Quirinal Palace, the Lateran Palace and the Palazzo Barberini, to name a few. Rome can be divided into several districts. The so-called historical center ("centro storico")
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