And I bet youre thinking to yourself - two young boys who want to be at the beach - and you took them to a dusty old European castle?  We must be either cruel parents, stupid parents or both.  But wait.  The castles have wised up over the years.  Some marketing professor came in and forced them to listen to their customer.  And so the castle has a treasure hunt built for young explorers.

You get a map at the gate with a series of clues.  The clues take you on a tour of the castle.

Each clue give you a letter, which you write into a special space in your map.

And when you are done, if you have managed to find all the clues, you spell a word that grants you a free glass of chocolate milk.

Its a pretty sneaky scheme to encourage young fellas to explore a castle - but let me assure you - it is effective.  It was voted as one of the popular highlights of the trip.