Galleria Nazionale d'Arte Moderna e Contemporanea di Roma

Built after 1631, the crypt of the church contains a macabre display - a series of chapels decorated with the bones of 3700 dead friars. The bones are glued to the walls and ceilings in bizarre and striking decorations.

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.

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.

Four fountains from the time of Pope Sixtus V when much of Rome was redeveloped. A reclining deity is the theme of each sculpture. This is a busy intersection and if you don't look twice you may miss these exquisite examples of Roman mythology.

Rome's museum of contemporary art, housed in a former industrial complex. Rotating exhibitions, each one usually lasting about 4 months. The MACRO Testaccio exhibition space is located in Aventino-Testaccio.

If stones could talk: these hallowed ruins were the most powerful seat of government in the world. To stand in the political, legal and religious centre of the whole Roman Empire brings shivers down one's spine. It is the best way of imagining the splendour and glory of ancient Rome. Located in a small valley between the Capitoline and Palatine hills, access to the Forum is by foot only, from an entrance on the Via dei Fori Imperiali. Wheelchair access is available for most of the Forum but be aware that the path is often bumpy due to it containing original stones from the ancient Roman period. The Forum is much less crowded than the Colosseum and, from a historical perspective, much more interesting. You can hire an audioguide for €5.5 from a small booth just above the Arch of Titus near the Colosseum. These audioguides contain an audio jack so that two people can easily share one. Built in 141 AD and dedicated to the Empress Faustina; after her husband emperor Antoninus Pius died in 161 AD the temple was rededicated to the couple. Completed in 179 BC. The 4th rebuilding of the meeting place for the Roman Senate, once converted into a church during the Middle Ages, but now restored since the 1930s. Erected in 203. You can see it close up from Via della Curia also (without entering the Forum). Finished in 29 BC, marks the spot of Caesar's spontaneous cremation and Mark Antony's funeral speech, made famous by Shakespeare in his play Julius Caesar ("Friends, Romans, Countrymen, lend me your ears ..."). Built in 81 AD by the emperor Domitianus in dedication to his brother Titus, who died earlier that year and reigned as emperor from 79-81, overseeing the opening of the Colosseum in 80 and the eruption of Mt Vesuvius the previous year. The remains of the ancient Roman archives, where Cicero and Seneca did research. Visible from the Forum and accessible through the Capitoline Museum.

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.

Although started in the 2nd century, San Callisto has had many more recent burials, including 16 popes. The burial arcades are almost 20 km long.

A relaxing place to sit and recover from the exertions of sightseeing. Permanent collection plus annual competition.

One of Bernini's masterpieces, an obelisk on the back of an elephant.

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.