Piazza del Campidoglio

It was constructed to hold relics of the Passion of Jesus. They include two thorns of his crown, part of a nail and three small wooden pieces of the Cross. The authenticity of these relics is much disputed, however.

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.

A very ancient church named after a saint who was in 1969 removed from the Roman Catholic calendar of saints for the lack of details of her life. But the church retains the name and is well worth visiting for an excellent 4th-century mosaic and attractive decorations on the facade. Visiting hours are short, but if you arrive close to 11:30, try talking to the attendant if you see him, and he might let you visit for a few minutes. The church is small, so 15 minutes should be long enough to see and absorb everything.

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.

Ballroom-like church which crowns part of the Capitoline Hill. Don't be fooled by the plain stone exterior.

Contains the tomb of Pope Hadrian IV, the last non-Italian pope before Pope John Paul I.

The chains that allegedly held St. Peter are displayed in a case before the altar. More importantly, contains the impressive statue of Moses by Michelangelo. It's close to the Colosseum, but a little hard to find. Take the steps opposite the Colosseum on Via dei Fori Imperiali, cross the road at the top and seek directions. Also reachable through steps to the right leading off Via Cavour.

The palace was built by the architect Baldassare Peruzzi on behalf of the Massimo family. The former palace was destroyed during the pillage of Rome in 1527. The Massimo family can be traced back to Quintus Fabius Maximus who defeated Hannibal in the 3rd century BC. The building is open to the public on March 16, only in order to commemorate the miraculous reanimation of Paolo Massimo by St. Philip Neri in 1538.

Small collection of railway carriages and related stuff. Really just for those with special interest in the topic. Entrance through the station if the main entrance is closed.

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).

The Servian Wall was the first wall around Rome, built around the 3rd century BC. This well-preserved section provides a good opportunity to observe the construction methods of that time, particularly the use of tufa rock blocks

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.

This is an important place of pilgrimage for Catholics because of the supposedly miraculous powers of an image of the Virgin Mary. The first miracle was in 1740 when a traveller being attacked by a pack of dogs called out to the Virgin’s image for rescue and the dogs calmed down. The image was moved to Rome in the Second World War and is credited with saving the city from destruction, as a result of which Romans vowed to construct this new sanctuary.

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.

A 1st-century tomb surrounded by two farmhouses from the Middle Ages, one of which used to be a cheese store. Rather hidden behind a high wall, the tomb is rarely open to the public. You might be lucky on a Sunday: on the third Sunday of every month there is a guided tour at 11:00.

Designed by Bramante to mark the spot of St. Peter's martyrdom, this delightful miniature building is considered a masterpiece of Renaissance architecture. Open to the public.

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.