I went to this yesterday afternoon: http://www.patek.com/contents/default/en/watchArtGrandExhibition2015.html If you're in the UK and have a chance to head over for a couple of hours it is well worth a visit. Closes on the 7th June so not long left to see it! My personal highlight was seeing the £1.7m Grand Master Chime attached to a broken rotating display which was causing the watch to bash against the fixing it was attached to! Everyone was too blinded by the watch to notice..