Casino Nobile Museum

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.

This is a treasure-trove of art. There are a couple of paintings by Caravaggio: "The Crucifixion of Saint Peter" and "The Conversion of Saint Paul" (in a dim alcove to the left of the altar, both at right angles to the viewer, with a machine wanting €2 to switch on the lighting) together with a sculpture by Bernini, frescoes by Pinturicchio and mosaics by Raphael. Part of the Dan Brown tour, this church featured in Angels and Demons, although the Vatican did not allow filming inside.

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

The temple of the Emperor Hadrian was consecrated in 145 AD by Emperor Antoninus Pius. The remains of the antique temple were incorporated into a new building that served as the Papal Customs House. It was finished around 1690 and today accommodates the Stock Exchange (Borsa).

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

This building housed the University of Rome from the middle of the 15th century until 1935. The splendid interior courtyard was created by Giacomo della Porta. The inside church of Sant'Ivo (see above) is one of the masterpieces of the architect Borromini.

Romans and leaders of Rome's defeated enemies were imprisoned here where they either died of starvation or strangulation. According to legend, St. Peter was also imprisoned here.

Next door to the Pyramid, this fine gate in the Aurelian Wall is named after St. Paul as the Via Ostiense leads to the basilica of St. Paul's Outside the Walls (see Rome/South).

A 19th-century addition to the square, made to balance the Fontana del Moro.

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.

Underground burial place of an ancient Roman family and of seven early popes.

The mausoleum of Cecilia Metella, who died in 69 BC, is the best preserved monument on the Appian Way and dominates the surroundings. In the Middle Ages it was transformed into a fortress and battlements were added. At that time there was considerable competition for ownership because of its strategic location.