The tower of Buranaccio (Tuscany, Italy)

Photo by Lupone

The tower was built in the middle of the 16th century, the precise date of the construction is unknown. It probably replaced a medieval fortification at the same place. Lots of these watchtowers were constructed along the Italian coastline in order to protect against (often Saracen) pirates. This particular tower also served as a border post between Tuscany and the Papal States.