Secret rooms are hidden spaces within buildings that are not easily visible or accessible. They can be found in various structures, including homes, castles, and museums. Often designed for privacy or security, these rooms may serve purposes such as storage, hiding valuables, or providing a safe retreat. Historically, secret rooms have been associated with spy activities, treasure hiding, or even escape routes. Some famous examples include the hidden chambers in medieval castles or the concealed spaces in Victorian homes. Today, they can also be part of modern architecture, adding an element of intrigue and surprise to a property.