"Το φρούριο"

Translation: The fortress

[PaulTsotso]

Shouldn't fort be an acceptable answer?

[Theo_Matrakas]

Added!!! Thanks :)

[Bohuslav1]

Strictly speaking, is it not correct that fortress is "όχυρο", whilst "φρούριο" is fort? The distinction between a fort and a fortress is slight, but I'm sure I read about the difference somewhere else on the course.