An oceanfront Tuscan villa that was once home to Leonardo da Vinci is on the market for just $14.6 million, and includes walls designed by the Renaissance master in 1502 while he was working as a military engineer. A few years later, he would paint the Mona Lisa, between 1503 and 1506.

Built in the 1400s as a fort, the four-story, five-bedroom estate is in the town of Livorno, about 15 miles from Pisa and 55 miles from Florence.