A monument for installation in an aircraft passenger cabin comprises a housing extending from the floor upwardly toward the ceiling, the housing including a first configuration configured to receive a wheelchair in a first unfolded condition, and a second configuration configured to receive a stretcher in a second unfolded condition, a first interior space formed in the housing, a staircase disposed within the interior space; a second interior space formed in the housing, a first entrance into the first interior space through a door; a second entrance into the second interior space of the housing, and a securement assembly positionable on the floor, the securement assembly configured to secure one of the wheelchair or the stretcher in place within the interior space.