Petra isn’t just a postcard, it’s a working UNESCO World Heritage Site that still gets ticketed, still gets excavated, and still closes for flash floods in a bad winter storm, so let’s sort the practical part before the history. Overnight-in-Jordan visitors pay 50 to 60 JD across a one to three-day ticket; day-trippers not staying the night pay a flat 90 JD instead. The site opens around 6am, and two full days is the real minimum for a place this size.