I going to go abroad to Siena city in Italy next March, so I recommend Siena.
Siena which is a small city on the hills in Tuscany, and there is Piazza del Campo where is called the most beautiful plaza in the world, so Siena is beautiful and old city.
Palio di Siena that is very very passionate festival is held twice a year, and people live for it!! Leaders of each region race riding horse that is without saddle, and audience is so excited. I look forward to seeing it!
Siena is very old, and traditional, so it seems to in the Middle Ages. If you go there, you can ascnd against a stream of age.