It is located in Lake Iseo in very northern Italy between Milan and the Swiss border in the Brescia region of Lombardy, near to Bergamo. It’s privately owned and no tourists are allowed on it but it can be seen from the shore – there’s actually a town (not a village) located quite close to it on the mainland but it’s not in this photo.
MATTHEW'S ISLAND 
Do you know on which lake this castle is located? Or is it off the coast? bob in toronto (thanks!)
It is located in Lake Iseo in very northern Italy between Milan and the Swiss border in the Brescia region of Lombardy, near to Bergamo. It’s privately owned and no tourists are allowed on it but it can be seen from the shore – there’s actually a town (not a village) located quite close to it on the mainland but it’s not in this photo.
Thank you ! I’ve hiked around Bergamo many years ago ! bob in toronto