Arch of Titus

Pope Nicholas III connected Castel Sant'Angelo to St. Peter's by a covered fortified corridor called the Passetto di Borgo. This proved useful for Pope Clement VII during the Sack of Rome (1527). You can still see much of the Passetto by walking along the Borgo Sant'Angelo, which runs parallel to, and north of, the Via della Conciliazione.

Contains the ruins of several large villas that belonged to wealthy Roman families. You can buy a combined ticket for the Palatine Hill, the Roman Forum and the Colosseum here, avoiding the long lines at the Colosseum. While the Imperial and Roman Fora are probably more spectacular, overall, there are amazing sights on the Palatine Hill, so unless you are terribly short on time or find it too challenging to climb the hill, allow an hour or more for these sights, too.

Next door to Santa Croce. A collection of around 3000 pieces, although only a third of these are displayed.

This is the largest square in Rome. It sometimes hosts pop concerts and is the focal point for Rome's New Year's Eve celebrations. The twin churches Santa Maria dei Miracoli (1681) and Santa Maria in Montesanto (1679) used to provide a clear welcome to Rome for those coming from the north. Much older, to the north of the piazza is yet another Santa Maria (see below). The Piazza del Popolo is considered as one of the most beautiful squares in Europe. It was enlarged and two streets, the Via di Ripetta and the Via del Babuino were added by order of Pope Sixtus V. In the middle of the square is an obelisk (see below). In 1809-1816, Giuseppe Valadier, Roman architect of French origin, gave the square its characteristic oval shape.

A great little cathedral to visit, lovingly looked after by Irish Dominicans. There is an excavated older church below the medieval church you enter and a Mithraeum (temple to Mithras, whose cult was very popular with Roman soldiers from the 1st to 4th century AD) below that. The only place in Rome to hear the underground river that flows beneath the city.

The remains of the ancient Roman archives, where Cicero and Seneca did research. Visible from the Forum and accessible through the Capitoline Museum.

This church can be an interesting deviation if you are passing through its neighbourhood. It is believed to be the grave of the Saints Ciro and Giovanni, killed during the time of the Emperor Diocletian. The original name was Abba Cyrus and through Appaciro and then Appacero it finally became Pacera, very close to today's Passera. The building is on top of a 3rd century building still visible in the lower floor and in the underground. The main part of the building dates back to the 9th century as do the frescoes on the higher floor. Some of the frescoes have been restored. Downstairs there is a small quadrangular room and the underground, where the remains of the two Saints are supposed to be. There are still visible 3rd century traces of Roman frescoes; in front of the stair you can enjoy a small bird, the Justice, and an athlete while in the vault some eight apex stars. Bus 128,780,781,775 (first stop in Via della Magliana).

Baroque church more noted for its position at the top of the Spanish Steps than it is for the church. Backdrop for numerous movies including Audrey Hepburn and Gregory Peck in Roman Holiday.

The most extensive collection of Etruscan art and artifacts anywhere. Fantastic collection and well worth the admission charge. A difficult museum to find, but a lovely display in a beautiful villa setting.

A truly quiet oasis close to the hustle and bustle of EUR. There are three churches in this complex and the doors are open all day, unlike city churches. The monks produce a range of products such as liqueurs, chocolate and honey, as well as a cure for the illnesses Romans suffer when the Scirocco wind blows in from the Sahara. These are on sale at a shop at the Abbey.

More of an enormous traffic circle than a piazza, but a good central location. The centerpiece is the enormous Vittorio Emanuele Monument (aka the Wedding Cake or the Typewriter) with the Capitoline hill next door. Mussolini used to harangue Romans from the first floor balcony of Palazzo Venezia (see under Museums), to the west of the square.

Unusual and fascinating round church dedicated to St. Stephen. It is the national church of Hungary in Rome. Dating from the 5th Century this is believed to be the largest round church in the world. Charles Dickens described its wall paintings of martyrdom and butchery as "hideous". A good starting point to visit the attractions of the Celio Hill (see Rome/Aventino-Testaccio).

They are posted at entrances to the Vatican City to provide security and protect the Pope. They wear very colourful clothing, similar to the uniforms worn by Renaissance-era soldiers. The Pontifical Swiss Guards is also the smallest and oldest standing army in the world, founded in 1506 by Pope Julius II. The origins of the Swiss guards, however, go back much further as the popes had regularly imported Swiss mercenaries during the 1400s.

At the southern end of the Piazza, designed by Bernini but the main statue of the Moor was done by Giacomo della Porta and the other statues are 19th-century copies of the originals.