Visitors should come prepared for an experience likely to be disturbing and difficult to forget when visiting United States Holocaust Memorial Museum. At the start of the tour, each visitor is given an identity card of a Holocaust victim that matches the visitor's own age and gender. Ordinary reality is skewed through off-center stairways, weird angles and the shadows of other visitors on the glass walkways overhead. An elaborate audio-visual display includes interviews, films and photographs. The Hall of Remembrance provides a calm, empty space at the end of the tour where one can reflect on the experience. The museum discourages children under 11 from attending. Free timed passes are needed to visit the permanent exhibit.