On the way from the central railway station to the city center, you will probably come across this beautiful entry fortification built at the end of the 13th century. You can still spot remains of decorative features that adorn this city gate.
Wikipedia https://fr.wikipedia.org/wiki/Antiporto_di_Camollia
Address 68 Viale Vittorio Emanuele II, Siena 53100, Italy
Coordinates 43°19'44.269" N 11°19'17.523" E