Piazza di Siena takes its name from the city of origin of one of the most ancient and noble families of Rome: the Borghese. At the end of 16th century, Prince Marcantonio Borghese commissioned to architects Mario and Antonio Asprucci a new space, able to recall the places he beloved. His desire, in fact, was to bring, in the city of Rome, the traditional popular celebrations atmosphere they enjoyed, since the Middle Ages, in Tuscany. Unfortunately Prince Marcantonio died before he could see it.
Piazza di Siena’s debut in equestrian competitions was in 1922, but only in 1926 the International Equestrian Federation included the Roman competition in the international agenda and the official numeration of the CSIO of Rome began. After three editions in a different location, in 1929 the horse show returned in Piazza di Siena. Some of the most relevant episodes of Italian riding took place in this public park, which is considered the biggest and more elegant of Rome: unforgettable challenges between extraordinary protagonists such as Bettoni, D’Inzeo or Graziano Mancinelli and other flagmen of this noble sport.
The appointment with the horse show was suspended only from 1941 to 1946, during the second world war. In 1960, while Piazza di Siena hosted the competitions of the Olympic Games of Rome, the C.S.I.O. moved to Turin. In 1998, instead, the International Official Horse Show left place to the World Equestrian Games performed in the Flaminio Stadium. But in 2000, Piazza di Siena had its reprisal hosting two CSIO, in May and in October, when it witnessed the final of the Super Samsung League.
In 2003 the International Show Jumping of Piazza Siena joined the eight best international show jumping of the Top League and from 2013 of the Division 1 of the FEI Nations Cup Series.