Zoological Garden 
To dream that you are visiting a zoological garden means you should look to succeed at a business venture by adhering to your ethics.
Concentration Camp
To dream of living in a concentration camp implies that you prefer that situations remain constant. You are unable to acknowledge disparity and inconsistency. You need to understand that everyone, including yourself, is different and has the right to their opinions and beliefs. If you actually lived in a concentration camp, the dream may represent feelings associated with this experience.