Answer: citadels

AnswerCrossword Clue
CITADELSStrongholds
CITADELSFortresses
CITADELSFastnesses.
CITADELSStrongholds.
CITADELSHolds
CITADELSHigh fortresses
citadelsfortress
citadelsCITADEL, a fortress