The Mansion on O Street's secret doors

The Mansion on O Street (O Street Museum) advertises and displays a large number of secret doors and hidden rooms as part of its attraction; the organization publicly states that the property contains more than 100 secret doors and dozens of hidden rooms used in tours and events. The presence of these concealed passages is a documented feature of the museum's architecture and programming, contributing to its reputation for eccentric and surprising spaces. The mansion operates as a museum, event space, and nonprofit with guided visits that highlight these hidden elements.