Piazza Navona is one of the most famous and arguably the most beautiful of Rome's many city squares. It is built on the site of the Stadium of Domitian, built in 1st century AD, and follows the form of the open space of the stadium.. In ancient Rome, this was a stadium, now is the most famous and characteristic of all the Roman Piazze, with its large pedestrian area and the three fountains, with its artists and tarot cards readers. The large and lively square features no less than three magnificent fountains. The central and largest fountain is the Fontana dei Quattro Fiumi (Fountain of the Four Rivers). The two other fountains on the piazza are the Fontana di Nettuno (Neptune fountain) and the Fontana del Moro (Moor fountain). Another eyecatcher is the baroque church of Sant'Agnese in Agone.