Kensington Palace has been a royal residence since the 17th century, and is to this day the unofficial base of Prince Harry. Recently, though, it has been taken over by a British theater group called Wild Works, who have created a treasure hunt designed to make particpants find the names and histories behind seven of the palace's princess residents.
As you explore the palace, actors walk around singing and giving hints. The rooms are all set up to reveal the (sometimes tragic) identities of their historical inhabitants (for instance a room is full of bottles of "shedded tears" to represent a princess distraught over her inability to have children.)
Enchanted Palace is part of a recent attempt to engage the Public with British History. Honestly, the thought of exploring a centuries old palace while actors creepily dress up and sing to you seems a little disconcerting to me, but I suppose people have to do SOMETHING after they graduate from RADA. London has always been ahead of the curve in terms of interactive art--even their nightlife is imbued with costumed actors doing crazy things in the middle of clubs. But the most sentimental of us (aka ME) can't help but wonder about the real ghosts possibly wandering around with all the actors...
The exhibit will run through the 2012 Olympics.