Dan and I found ourselves at Aljoun Castle earlier this year on a day trip from Amman. We had previously never heard of Aljoun Castle, but it was a super cool castle with well-preserved exterior that tourists can walk around around. We would never had visited it without the stop being included on our day trip. Here are some pictures and information if you want to include a stop at Aljoun on your own Jordan tour!
Aljoun Castle. Stairs up to the roof.