Piazza del Popolo

At the northern end of Via XX Settembre next to the Porta Pia designed by Michaelangelo. The previous embassy had been destroyed by a terrorist bomb in 1946 and was eventually replaced by this world-renowned modern design by Sir Basil Spence. It was built on stilts so as not to interrupt the view of the garden.

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.

Completed in 179 BC.

This church was built next to the mausoleum of Santa Costanza in the 7th Century and is on top of catacombs. It is very unusual in that the floor level is at the level of the catacomb floor, and the street entrance is at the level of the second floor gallery. The body of St. Agnes lies in a silver sarcophagus. There are several stories about her death at the age of 13 in 304 AD. One is that the prefect Sempronius wanted her to marry his son, and condemned her to death when she refused. Roman law did not permit the execution of virgins, so he ordered her to be raped but her virginity was miraculously preserved. She was then condemned to be burnt at the stake but the wood would not burn. Another is that she was stripped naked by the Emperor Diocletian because of her refusal to marry but that her hair then grew rapidly to preserve her modesty.

This was the site of the slaughter in 1944 of 335 Italians, including many Jews from the Ghetto, in retaliation for a Partisan attack on German troops in Rome. The caves where the massacre took place are now a National Monument and Memorial Cemetery and can be visited daily.

A small piazza just behind the Pantheon. The centerpiece is a statue of an elephant by Bernini with an ancient obelisk on its back.

The first pedestrian-only bridge was built here in 206 BC and marks the passage of the Roman Via Flaminia over the Tiber. In 115 BC, the original bridge was demolished and rebuilt. It has been restored and remodelled several times since. In 2006, the bridge began attracting couples who, influenced by a movie, used a lamppost on the bridge to hang padlocks as a sign of their love, locking the padlock to the lamppost, then throwing the key behind them into the river. In 2007 the lamppost collapsed under the weight! Feeling sorry for the lovers the mayor ordered construction of steel posts, where padlocks can once again be hung.

A 5th-century basilica, simply and attractively decorated. The wooden door, of which 18 carved panels of scenes from the Bible survive, is believed to date from the church's construction.

In addition to Santa Maria in Cosmedin there is a lot to be seen around this piazza. Opposite the church is the round temple dedicated to Hercules Invictus (the Unconquered Hercules), and not far from that the rectangular Fortuna Virilis, both constructed in the 1st Century. Opposite, to the back of the piazza is the Arch of Argentari and behind that the church of San Giorgio in Velabro, the front of which was repaired after being damaged by a terrorist bomb in July 1993.

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.

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.

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

By Bernini, in the very centre of Piazza Navona. Incorporates an Egyptian obelisk and symbolises four of the world's great rivers (the Ganges, the Nile, the Danube and the Plata), representing the four continents known at the time.

An ethnographic collection of around 60,000 pieces from European indigenous cultures. Documents evolution from the Palaeolithic age to the Iron Age.

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.

Regular shows plus an excellent astronomical museum.

This building was erected in the 16th century for Cardinal Girolamo Capodiferro. One century later it was acquired by another powerful Cardinal, Bernardino Spada, and was restored by Borromini, who created the forced perspective optical illusion in the arcaded courtyard.

Perhaps the most fascinating building in Rome. The core of the structure began life as the mausoleum of Emperor Hadrian, built between 135 and 139 AD. Subsequent strongholds built on top of the mausoleum were in turn incorporated into a residence and castle by medieval Popes. The building was used as a prison until 1870 but now houses a museum. Opera buffs will be exhilarated to visit the balcony from which Tosca leaps to her death. Film buffs will recognise it as a setting from Angels and Demons.

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