They have helped besieged rulers escape attackers, including Pope Alexander VI in 1494, Pope Clement VII in 1527 and Marie Antoinette in 1789. Hidden passages and secret rooms have been built in castles and houses owned by heads of state, the wealthy, criminals, and abolitionists associated with the American Underground Railroad. Others allow people to enter or exit buildings without being seen. They are sometimes inside buildings leading to secret rooms. Secret passages, also commonly referred to as hidden passages or secret tunnels, are hidden routes used for stealthy travel, escape, or movement of people and goods.
View inside the Passetto, the secret passage between Vatican City and Castel Sant'Angelo in Rome, Italy Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources.
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