Beleaguered Castle is a solitaire card game played with a deck of 52 playing cards. This puzzle was inspired by some other picture puzzles by Oberon & Ratwaffles.
The Puzzle - Tale of Two Castles
Along time ago the King of Beleaguered built two castles, Beleaguered & Louis. Each castle was built exactly the same from the outside. However, on the inside the castles were very different from each other. Rumor has it that the King built the castles to conceal his fortune. In each castle numbers made of gold are hidden through out. It is believed that 15 of these golden numbers exist. Some folks say that the one who finds all 15 numbers will be given the location of the Kings most valuable treasure, a small box containing untold value. No one knows where any of the numbers are hidden but a good place to start may be in the village outside the castles.
Update (January 4th)
After much searching and coming up empty handed you decide to visit Castle Louis. You enter the castle from the north gate and notice a unique inscription above the archway that reads XLVIII L DCCLXVI. You get the feeling that Castle Louis is the key to finding the golden numbers.
Update Update (January 6th)
After searching the inside of Castle Louis and not finding any of the golden numbers, you departed through the east gate and notice the following inscription above the archway that read II XX DCCL.
Update Update Update
You decide to go for a hike to clear your head. While on the trail you find a nice log near a pond that is just inviting you to take a rest. You sit down and stare across the pond, you wonder what is on the other side. After clearing your head up a bit you decide to head over to the other side of the pond and see what is there.
You can validate your puzzle solution with certitude.