The core of Monteriggioni is a small fortified village. The diameter of the castle is 172 meters, surrounded by massive walls of elliptical shape with a thickness of no less than 2 meters, interspersed with 15 towers and two gates, which surrounds a hill called Mount Wing . The towers now rise above the walls to 6.5 meters thick 4x6 feet, and only 11 are visible: the other four were reduced to the level of the walls. On the walls there was a walkway that ran the entire perimeter. In 2005 were reconstructed parts of the walkway, where you can enjoy a unique and charming. The free port or Romea (oriented Siena) located at the base of a tower while that of St. John (toward Florence) opens in the walls and towers defended by a fortified perimeter. Entering from the free port or Romea, which was originally equipped with a heavy gate that was lowered in an emergency, you get to Piazza Roma, the heart of the village. The square originally was "digging in" or unpaved, but in the '60s was paved with stone from the quarries of Rosia (called Stone Tower). To date, the square is surrounded by gardens and orchards, very important in the past to allow the survival of the population in case of siege. On the square stands the Church of Santa Maria Assunta. From [LINK: http://it. wikipedia.org / wiki / Monteriggioni] Wikipedia [/ LINK]