Step into the towering, stone-vaulted Knight's Halls, built 800 years ago by the Hospitallers (a monastic military order), and it's not hard to envision the medieval knights who once lived here. Marco Polo, on his way to meet Kublai Khan, may have dined in the refectory ; in each of the two corners to the left as you enter, you can see a fleur-de-lys, emblem of the kings of France.
Right outside, a tunnel – just wide enough for one person and almost high enough to stand up in – leads out to the Turkish Bazaar via a souvenir shop that was here long before the tunnel was opened to the public.