The Fortress of San Leo is a castle on the border of the Marche and Romagna regions of central Italy, and famous as the death-place of Count Cagliostro. It contains a museum.
It was one of the palaces owned by Federico da Montefeltro and his wife Battista Sforza and was a fortified, palatial retreat.
It played a large part in the 1991-film Hudson Hawk as the fictional castle of Leonardo Da Vinci.
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