It contains one of two surviving Armstrong 100 - ton guns .
It is commonly referred to as Fort Rinella ( Maltese : Forti Rinella ) , although it was never classified as a fort while in use .
Fort Rinella contains one of two surviving Armstrong 100 - ton guns .
It is commonly referred to as Fort Rinella ( Maltese : Forti Rinella ) , although it was never classified as a fort while in use .