The fort, built by the Venetians and Known to Ierapetrans as the "Kalés" (GR: Καλές), has been erected on the top of the southernmost mole of the ancient harbour. It is one of those monuments of the past which, because of its solid construction and the fact that it was still garrisoned until the latest years of the last century, still exists today to serve as a reminder of some of the nation's most difficult times.