Stroll through a maze of fascinating medieval streets and narrow alleys. The walk begins from Via del Portico d'Ottavia, once „Via Rua", you will soon see the Roman remains of the ancient fish market and the beautiful architecture of Teatro Marcello (Marcello's Theatre), the three tall columns that survived from the Temple of Apollo Medicus (built in 433 BC), and the ruins of the Temple of Bellona (built in 236 BC dedicated to the God of War). In the 16th century a palace was built by the powerful Orsini family in the caves of the theater. The theater was commissioned by Julius Caesar, inaugurated by Augustus in 11 BC, and dedicated to the memory of his nephew Marcellus (Octavia's son) who died at the age of 19. The street, Via del Portico D'Ottavia, takes its name from the huge quadriporticus of Octavia, which originally had about 300 columns, incorporating the Temples of Jupiter and Juno (23 AD). Keep walking along Via della Reginella, pass by buildings of no less than 6 floors with low-ceilings that were typical in the old ghetto, it’s possible to reach Piazza Mattei. Overlooking a little square, is Palazzo Costaguti, frescoed by Guercino, and Palazzo Mattei (16-17th century). Its courtyard, with a double loggia and staircase decorated by colossal Roman busts, statues, sarcophagi, and antique relics, all of them in excellent condition, making it one of the most curious sights of the city. The churches of Santa Maria in Campitelli and Santa Caterina dei Fumari, the Palaces of Albertoni and Capizucchi are other jewels of this peaceful residential and monumental area where it is still possible to find the spirit of Ancient Rome. End of the Jewish ghetto Rome walking tour.