Transformable monuments may be positioned proximate to aircraft exit doors to utilize the doorway spaces as temporary workspaces for cabin crew or destination spaces for passengers once cruising altitude is achieved. A transformable monument includes transforming portions that extend or pivot into an aircraft cross-aisle upon actuation of an exterior latch by either hand. The transforming portions extend or pivot into horizontal surfaces for crew or passenger use while protecting the exit doors from unauthorized access by passengers inflight. Transforming portions of a single monument may extend partially or fully across the cross-aisle, or a system of two transformable monuments on either side of the exit door may collectively define the temporary space. The upper and middle sections of the monument may include additional storage or self-service compartments for providing refreshments or other amenities to passengers.