you know that Hordus (Herod in english) built metsada? before him, no one even thought about this place for many reasons: 1. its in the middle of the fcking desert 2. jerusalem is about 1 day of walking away 3. no one looked this place to build castle 4. it will cost a lot to bring stones to this place 5. its hard to store water in the desert 6. its super hard to move supply to Metsada (Masada), its on the top of a precipitous hill. he built it as his secret hideout and no, they didnt all commit suicide. The soldiers of Rome killed them all but wrote that they did suicide so they wont be remembered as mosters who killed a bunch of people who didnt actually fought against Rome.