In any city, in any country, go to any mental institution or halfway house you can get yourself to. When you reach the front desk, ask to visit someone who calls himself "The Holder of Madness". The worker will bow formally, with his hand tucked under his chest, and motion for you to follow into a waiting room. He will leave, and the lights will go out. When they return, approximately thirteen seconds later, you will be in a dirty hallway with cuneiform scratchings on the walls. Touching that skull will bring you to the foyer of an ancient temple, lying in the sands of Mesopotamia.