Wonders according to which count? What is considered a wonder and what is not?
They say that if the ravens leave this place the kingdom in which it is located shall fall. In the center part of this place you will find four of the things this place is named after, but in the places name, it is just the singular. Most precious possessions rest there, to be looked at, but not to be taken. Several gates lead to the place, but in older days you wouldn't have asked to enter through one in particular, for that would have meant your death.
(I hope it sounds not to confusing and mysterious. You all know this place I'm sure).