Famous for its Gothic architecture, this amazing medieval city is part of the UNESCO World Heritage. Stroll through the historic center with well-preserved buildings dating back to the 12th and 13th centuries. The city center is quite compact, everything being in a walking distance. While exploring its narrow streets, don't forget to look up every once in a while as there is always something to marvel at.
Wikipedia https://en.wikipedia.org/wiki/Siena
UNESCO website http://whc.unesco.org/en/list/717
Address 5 Via di Beccheria, Siena 53100, Italy
Coordinates 43°19'7.262" N 11°19'49.832" E