Renovating a house can be exhausting and laborious, not to mention stressful. You expect a couple of problems to arise along the way, whether it’s faulty plumbing, wiring, or termites. But what if, as you’re knocking down walls you manage to break through and discover an underground city in your basement? An underground city well over 2,500 years old? One homeowner in Turkey was surprised when his home renovation turned out to be one of the biggest finds in the century. What he found still baffles archaeologists and historians to this day.