San Luigi dei Francesi

This palace of the 16th century was erected by the famous Medici family. It was the residence of Cardinals Giovanni and Giuliano Medici, later Pope Leo X. and Clement VII. Catherine de Medici, Pope Clement VII's niece lived here until her marriage in 1553 with Prince Henry, the son of King Francis I of France. The palace is named after Madama Margerita of Austria, the illegitimate daughter of Emperor Charles V. Since 1871 it has been the seat of the Italian Senate.

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

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.

This little church is hard to find but well worth the extra effort although it is often closed when you get there. One of Borromini's masterpieces. It is located only a block from Piazza Navona, but not usually visible from the street, as you must enter the courtyard of an old palazzo to reach the church. Sant'Ivo is a small church the dome of which is shaped like the Star of David, but with every other point rounded. The steeple seen from the outside looks like it has a staircase wrapped around it that ascends to heaven. As the church was commissioned by the Barberini family that produced a number of popes and whose family symbol was the bee—some say the steeple resembles the stinger of the insect.

The pride of Baroque Rome, was established towards the end of the 15th century, and preserves the shape of the ancient Stadium of Domitian. The buildings surrounding the square stand where the spectators once sat, watching the spectacle of the naumachiae (battles among ships). The square remains completely unspoilt by traffic and modern buildings. Today, the square is an immensely popular place to sip a cappuccino, shop, and watch street performers. Behind the piazza at the northern end, you can still see remains of the Roman athletic stadium well below the current ground level. Amongst the various monuments of the square, look especially for the two Baroque masterpieces by Bernini and Borromini.

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.