Santa Maria in Trastevere

Simple and elegant lines make up this building, whose construction began in 1480 for Count Girolamo Riario, nephew of Papa Sisto IV, and was taken up by architect Martino Longhi for the new owner, Cardinal Marco Sittico Altemps. Today it houses one of the branches of the National Museum of Rome, showcasing ancient and Renaissance sculptures, and the results of the 16th/17th-century fashion for 'completing' ancient sculptures missing heads or arms.

The western end of the ancient Via Appia road connecting Rome to Brindisi in the heel of Italy, and as such the third world heritage site in Rome together with the Old Center and the Vatican. As such it's an important historical location, even if the remains of the gate aren't as impressive as the city's major sites. As Via Appia heads southeast out of Rome, and after a few kilometers the route is officially named Via Appia Antica and starts looking more historical: it gets narrow as a city street, the asphalt is replaced by a rock surface and the road is lined with parks and park-like areas and walled old buildings. This section has been described as the world's longest museum.

This is not, contrary to popular belief, one of the original seven hills that Rome was founded on. It is the second highest after Monte Mario, though, and offers incredible panoramic views of the city as long as the authorities remember to prune the trees on the hillside (if they are too tall you can walk a few meters down the hill for views that are just as good). On the other side of the piazza there is also a nice view of the dome of St. Peter's. The Piazza and the street leading up the hill are dedicated to Giuseppe Garibaldi who led Italian troops against the French here in 1849. There are also several commemorative statues.

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 museum is dedicated to Napoleon Bonaparte and his family. After Napoleon's death in 1821 the Pope gave permission to his family to settle down in Rome. His sister married Prince Camillo Borghese.

Built in honour of Victor Emmanuel, the first king of a unified Italy, this vast structure may appear to be solid white marble but actually contains many rooms inside. There are two permanent museums, one on Italian Reunification and one on emigration from Italy, as well as other spaces that host rotating exhibitions. A walk through the Flag Room leads to the tomb of the unknown soldier. Good views from half-way up but you can also pay €10 (€2 concessions) and take a lift all the way to the top.

Built in the 9th century, this ancient basilica crowns the top of the Esquiline Hill. Tons of gold decorate the interior together with impressive mosaics (particularly when the floodlights are turned on), and there is a museum on the premises. If you are in Rome on Corpus Christi (Corpus Domini), which is the Thursday after the 8th Sunday after Easter, an early-evening service is held in San Giovanni by the Pope followed by a procession along Via Merulana to Santa Maria. Good opportunity for a close up view of the Pope. This is a very large church with lots to see, as for example, the main part of the church has two layers of mosaics and paintings high on the walls, the altar and apse are spectacular, and then there are several more or less large chapels you won't want to miss, including the one with the amazing golden baptismal font. Allow at least an hour if not an hour and a half or more to visit the interior, even if you do not take any special tours, and also allow time to view the exterior from all sides. Overall, at least 2 hours would not be too much time to allot.

This church, which was commissioned by Ferdinand and Isabella of Spain, marks the point where, according to tradition, St. Peter was crucified. Particularly interesting for Irish visitors as it contains the graves of three Gaelic Chiefs who fled Ireland in 1607.

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.

An example of urban planning that goes back to Pope Julius II, who, in 1508, envisioned it as a street that would connect all major government buildings. It is around a kilometer long and is in a straight line, an unusual feature for the time. It is lined with some interesting palaces but these days is more known for its antique shops. Via Giulia runs parallel with and one block from the River Tiber.

This is one of the two main Jesuit churches in Rome, the other being the nearby Sant'Ignazio. The interior is Baroque art on steroids. Simply astounding.

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.

housed in the baroque palace Corsini where Christina, Queen of Sweden settled down in the last years of her life