Jerusalem is an amazing city. History, culture, and night life. And must visit the old city. Amazing place with a very long and complex history. Still many cultures and religions clashes in this small area, most sacred for Christians and Muslims. There is no way to fully understand the history of monotheistic religions and the world as it exists now without visiting this place. The best option would be to take a guide for a first day and just wander around on the next day. Few hours is not enough. Must visit Mamila Mall, and The market Mahane Yehuda that at night change to bars and night life area. It is safe.