This would be the one picture I would choose for a crash-course in Holocaust awareness for the intelligent young, lest they forget. Much better than collecting millions of buttons, soda tabs etc.

This is the scale model of Krema II in the Auschwitz Museum, apparently placed behind a glass protection in order to prevent the small dolls being stolen by visitors.
Key to the image:
0 - Reflection of the window on the opposite side of the room.
1 - Underground gallery where many hundreds of victims at a time got undressed for the fake showers in room number 2. According to some Holocaust scholars, this gallery is also supposed to have had fake showers installed in it, just to confuse the undressing victims.
2 - Underground gas chamber, called simply "morgue" or "mortuary cellar" in all German documents and blueprints, in order to fool the future generations of scholars looking for the mysteriously vanished Jewish race. This is where many hundreds of victims were gassed at a time, in a round-the-clock mass murder industrial process by Zyklon B, the same product used to preserve human lives by killing lice (unless the witnesses are lying or very, very confused).
3 - Small elevator bringing daily many thousands of gassed corpses from the underground chamber to the crematories at ground level. Known to the fun-loving SS as "The Little Elevator that Could".
4 - Crematory ovens where many thousands of corpses a day were instantly vaporized, without even having to wait for some heat to dissipate before each door opening, contrary to the ovens in your run-of-the-mill crematory. Alas, the technology of the ovens was one of the best kept secrets in the Reich (unless they were ordinary ovens operated by miracle) and no one has been able to duplicate it.
5 - The famous chimneys, producing lots of smoke, contrary to the chimneys on your run-of-the-mill crematory that produce none. This is attributed to the twisted minds of the German guards who attempted to hide their crimes from the curious in the neighbourhood by using dense curtains of artificial smoke.
Now that you know which room is which, don't let anyone distract your gaze away from the image. Picture the gold-mining brigades, struggling through the corpse-scape, trying not to absorb any cyanide residues trapped among the still palpitating bodies, in order to perform their difficult tasks, such as inspecting body orifices, pulling teeth off, smoking cigarettes and eating sandwiches (according to the Höss testimony).
Then comes the most important part. Wait for a few seconds, take a deep breath, and picture the enormous round-the-clock traffic jam at point number 3, during the process of emptying the gas chamber of bodies, through the small elevator room, with or without (as you prefer) the folks next door waiting, soap in hand, for their shower.
Finally, ask your teacher to point the place, any place, where all those typhus dead were deposited while the live folks were being gassed in the gas chamber the Germans called "a morgue".
If you get a satisfactory answer, please let me know.