Did you know that ancient Japanese castles had floors that chirped like nightingales? These clever alarm systems alerted guards to intruders, even ninjas! Watch this fascinating glimpse into history and learn how nightingale floors helped protect castles from unwanted guests.

Original channel link:
[ Ссылка ]
Video Credit: @zackdfilms
**Copyright Disclaimer:**
Under section 107 of the copyright Act 1976, allowance is made for FAIR USE for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational, or personal use tips the balance in favor of FAIR USE.

свернуть