Test your art observation skills to the limit with this visually stunning spot-the-difference book from The National Gallery. A great gift for art lovers and puzzlers alike, the book features 40 of the London gallery's most iconic paintings. Each one is reproduced in duplicate, with 20 discreet differences for you to spot. The perfect way to encourage art appreciation, each image is also accompanied by information about the work. Varying from fun to genius, discover John Constable's The Hay Wain, Claude Monet's Bathers at la Grenouillere, Canaletto's A Regatta on the Grand Canal and so much more. Once you've finished, you can find the answers in the back of the book.