This house fascinates. From the Hogarth's to the Piranesi pieces, the busts, relics, ancient artifacts, disappeared pendentives on the shallow dome, and the mummified cats found entombed in the walls, the public can now see Sir John's private apartments not open since the 1860's. Be sure to scroll through the images at the bottom of the article.
On any trip to London this space is a must see.