A Book in the Thames

On our last day in London, Ellie and I walked well over 10 miles, stopped at numerous galleries, museums and historic sites, and even rowed a makeshift boat on a rooftop of the Southbank Centre, yet this video clip is of the most stunning thing we saw, perhaps on the entire trip: Book_in_Thames.
The segment really only catches the tail end of the event, but we watched this book for nearly ten minutes as its leaves spilled over each other, back and forth, in the tide of the Thames.